Electronic key lockout control in lockbox system
First Claim
1. A method for operating an electronic lockbox system, said method comprising:
- (a) providing a plurality of electronic lockboxes and a plurality of electronic keys;
(b) of said plurality of electronic lockboxes, providing a first electronic lockbox having;
a first processing circuit, a first memory circuit, a first short range wireless communications device, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment;
(c) of said plurality of electronic keys, providing a portable first electronic key having a second processing circuit, a second memory circuit, a data entry device, a display, and a second short range wireless communications device;
(d) initiating a data exchange between said first electronic lockbox and said first electronic key, using said first and second short range wireless communications devices;
(i) at said first electronic lockbox, receiving a first data message from said first electronic key, said first data message containing at least one of;
(A) identity information for said first electronic key, and(B) personal ID data regarding a specific human user;
(ii) if a user is attempting to access said first secure compartment, then allowing access if said first electronic key'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and
(iii) temporarily disabling effective operation of said first electronic key from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said first sensor;
(e) sending a second data message from said first electronic key to said first electronic lockbox that contains an identity designator of the “
last lockbox visited”
by said first electronic key; and
(f) if said identity designator in said second data message corresponds to said first electronic lockbox, then said first electronic key automatically remains enabled to function in all normal ways, including for accessing the other of said plurality of electronic lockboxes.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic lockbox system includes a wireless portable transponder that communicates with an electronic lockbox using a low power radio link. The portable transponder includes: a wide area network radio to communicate to a central clearinghouse computer, a motion sensor to activate its wide area network radio, and a connector to communicate with a secure memory device. The electronic lockbox sends a hail message that is intercepted by the portable transponder; the hail message includes identification information. The portable transponder responds with a message that includes a time sensitive encryption key; the lockbox authenticates this response message using its own time sensitive encryption key. If an electronic key is used to access the lockbox, the improved system effectively disables the electronic key during a showing, so that the electronic key cannot be used to access another lockbox until the correct dwelling key has been placed back into the lockbox.
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Citations
25 Claims
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1. A method for operating an electronic lockbox system, said method comprising:
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(a) providing a plurality of electronic lockboxes and a plurality of electronic keys; (b) of said plurality of electronic lockboxes, providing a first electronic lockbox having;
a first processing circuit, a first memory circuit, a first short range wireless communications device, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment;(c) of said plurality of electronic keys, providing a portable first electronic key having a second processing circuit, a second memory circuit, a data entry device, a display, and a second short range wireless communications device; (d) initiating a data exchange between said first electronic lockbox and said first electronic key, using said first and second short range wireless communications devices; (i) at said first electronic lockbox, receiving a first data message from said first electronic key, said first data message containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then allowing access if said first electronic key'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) temporarily disabling effective operation of said first electronic key from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said first sensor; (e) sending a second data message from said first electronic key to said first electronic lockbox that contains an identity designator of the “
last lockbox visited”
by said first electronic key; and(f) if said identity designator in said second data message corresponds to said first electronic lockbox, then said first electronic key automatically remains enabled to function in all normal ways, including for accessing the other of said plurality of electronic lockboxes. - View Dependent Claims (2, 3)
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4. A method for operating an electronic lockbox system, said method comprising:
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(a) providing a plurality of electronic lockboxes and a plurality of electronic keys; (b) of said plurality of electronic lockboxes, providing a first electronic lockbox having;
a first processing circuit, a first memory circuit, a first short range wireless communications device, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment;(c) of said plurality of electronic keys, providing a portable first electronic key having a second processing circuit, a second memory circuit, a data entry device, a display, and a second short range wireless communications device; (d) initiating a data exchange between said first electronic lockbox and said first electronic key, using said first and second short range wireless communications devices; (i) at said first electronic lockbox, receiving a first data message from said first electronic key, said first data message containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then allowing access if said first electronic key'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) temporarily disabling effective operation of said first electronic key from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said first sensor; (e) sending a second data message from said first electronic key to said first electronic lockbox that contains an identity designator of the “
last lockbox visited”
by said first electronic key; and(f) if said identity designator in said second data message does not correspond to said first electronic lockbox, then sending a fourth data message from said first electronic lockbox to said first electronic key instructing said first electronic key to place itself into a disable mode that prevents said first electronic key from accessing the other of said plurality of electronic lockboxes. - View Dependent Claims (5, 6)
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7. A method for operating an electronic lockbox system, said method comprising:
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(a) providing a plurality of electronic lockboxes and a plurality of electronic keys; (b) of said plurality of electronic lockboxes, providing a first electronic lockbox having;
a first processing circuit, a first memory circuit, a first short range wireless communications device, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment;(c) of said plurality of electronic keys, providing a portable first electronic key having a second processing circuit, a second memory circuit, a data entry device, a display, and a second short range wireless communications device; (d) initiating a data exchange between said first electronic lockbox and said first electronic key, using said first and second short range wireless communications devices; (i) at said first electronic lockbox, receiving a first data message from said first electronic key, said first data message containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then allowing access if said first electronic key'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) temporarily disabling effective operation of said first electronic key from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said first sensor; (e) at said first electronic key, immediately entering a limited function mode of operation which allows communication with said first electronic lockbox, but does not permit communication with any other electronic lockbox in said system; (f) sending a second data message from said first electronic key to said first electronic lockbox that contains an identity of the last lockbox visited by said first electronic key; and (g) if said identity in said second data message corresponds to said first electronic lockbox, then automatically re-enabling said first electronic key.
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8. A method for operating an electronic lockbox system, said method comprising:
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(a) providing a plurality of electronic lockboxes and a plurality of electronic keys; (b) of said plurality of electronic lockboxes, providing a first electronic lockbox having;
a first processing circuit, a first memory circuit, a first short range wireless communications device, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment;(c) of said plurality of electronic keys, providing a portable first electronic key having a second processing circuit, a second memory circuit, a data entry device, a display, and a second short range wireless communications device; (d) initiating a data exchange between said first electronic lockbox and said first electronic key, using said first and second short range wireless communications devices; (i) at said first electronic lockbox, receiving a first data message from said first electronic key, said first data message containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then allowing access if said first electronic key'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) temporarily disabling effective operation of said first electronic key from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said first sensor; (e) at said first electronic key, immediately entering a limited function mode of operation which allows communication with said first electronic lockbox, but does not permit communication with any other electronic lockbox in said system; (f) sending a second data message from said first electronic key to a second one of said plurality of electronic lockboxes that contains an identity of the last lockbox visited by said first electronic key; and (g) if said identity in said second data message does not correspond to said second electronic lockbox, then leaving said first electronic key in said limited function mode of operation.
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9. An electronic lockbox system, said system comprising:
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(a) a plurality of electronic lockboxes and a plurality of electronic keys; (b) of said plurality of electronic lockboxes, a first electronic lockbox having;
a first processing circuit, a first memory circuit, a first short range wireless communications device, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment; and(c) of said plurality of electronic keys, a portable first electronic key having a second processing circuit, a second memory circuit, a data entry device, a display, and a second short range wireless communications device; wherein said first and second processing circuits are configured; (d) to initiate a data exchange between said first electronic lockbox and said first electronic key, using said first and second short range wireless communications devices; (i) at said first electronic lockbox, to receive a first data message from said first electronic key, said first data message containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then to allow access if said first electronic key'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) to temporarily disable effective operation of said first electronic key from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said first sensor; (e) to send a second data message from said first electronic key to said first electronic lockbox that contains an identity designator of the “
last lockbox visited”
by said first electronic key; and(f) if said identity designator in said second data message corresponds to said first electronic lockbox, then said first electronic key automatically remains enabled to function in all normal ways, including for accessing the other of said plurality of electronic lockboxes.
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10. An electronic lockbox system, said system comprising:
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(a) a plurality of electronic lockboxes and a plurality of electronic keys; (b) of said plurality of electronic lockboxes, a first electronic lockbox having;
a first processing circuit, a first memory circuit, a first short range wireless communications device, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment; and(c) of said plurality of electronic keys, a portable first electronic key having a second processing circuit, a second memory circuit, a data entry device, a display, and a second short range wireless communications device; wherein said first and second processing circuits are configured; (d) to initiate a data exchange between said first electronic lockbox and said first electronic key, using said first and second short range wireless communications devices; (i) at said first electronic lockbox, to receive a first data message from said first electronic key, said first data message containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then to allow access if said first electronic key'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) to temporarily disable effective operation of said first electronic key from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said first sensor; (e) to send a second data message from said first electronic key to said first electronic lockbox that contains an identity designator of the “
last lockbox visited”
by said first electronic key; and(f) if said identity designator in said second data message does not correspond to said first electronic lockbox, then to send a fourth data message from said first electronic lockbox to said first electronic key instructing said first electronic key to place itself into a disable mode that prevents said first electronic key from accessing the other of said plurality of electronic lockboxes. - View Dependent Claims (11)
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12. An electronic lockbox system, said system comprising:
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(a) a plurality of electronic lockboxes and a plurality of electronic keys; (b) of said plurality of electronic lockboxes, a first electronic lockbox having;
a first processing circuit, a first memory circuit, a first short range wireless communications device, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment; and(c) of said plurality of electronic keys, a portable first electronic key having a second processing circuit, a second memory circuit, a data entry device, a display, and a second short range wireless communications device; wherein said first and second processing circuits are configured; (d) to initiate a data exchange between said first electronic lockbox and said first electronic key, using said first and second short range wireless communications devices; (i) at said first electronic lockbox, to receive a first data message from said first electronic key, said first data message containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then to allow access if said first electronic key'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) to temporarily disable effective operation of said first electronic key from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said first sensor; (e) at said first electronic key, to immediately enter a limited function mode of operation which allows communication with said first electronic lockbox, but does not permit communication with any other electronic lockbox in said system; (f) to send a second data message from said first electronic key to said first electronic lockbox that contains an identity of the last lockbox visited by said first electronic key; and (g) if said identity in said second data message corresponds to said first electronic lockbox, then to automatically re-enable said first electronic key.
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13. An electronic lockbox system, said system comprising:
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(a) a plurality of electronic lockboxes and a plurality of electronic keys; (b) of said plurality of electronic lockboxes, a first electronic lockbox having;
a first processing circuit, a first memory circuit, a first short range wireless communications device, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment; and(c) of said plurality of electronic keys, a portable first electronic key having a second processing circuit, a second memory circuit, a data entry device, a display, and a second short range wireless communications device; wherein said first and second processing circuits are configured; (d) to initiate a data exchange between said first electronic lockbox and said first electronic key, using said first and second short range wireless communications devices; (i) at said first electronic lockbox, to receive a first data message from said first electronic key, said first data message containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then to allow access if said first electronic key'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) to temporarily disable effective operation of said first electronic key from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said first sensor; (e) a second one of said plurality of electronic lockboxes; wherein said processing circuits are further configured; (f) at said first electronic key, to immediately enter a limited function mode of operation which allows communication with said first electronic lockbox, but does not permit communication with any other electronic lockbox in said system; (g) to send a second data message from said first electronic key to a second one of said plurality of electronic lockboxes that contains an identity of the last lockbox visited by said first electronic key; and (h) if said identity in said second data message does not correspond to said second electronic lockbox, then to leave said first electronic key in said limited function mode of operation.
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14. A method for operating an electronic lockbox system, said method comprising:
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(a) providing a plurality of electronic lockboxes and a plurality of electronic keys; (b) of said plurality of electronic lockboxes, providing a first electronic lockbox having;
a first processing circuit, a first memory circuit, a first short range wireless communications device, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment;(c) of said plurality of electronic keys, providing a portable first electronic key having a second processing circuit, a second memory circuit, a data entry device, a display, and a second short range wireless communications device; (d) initiating a first data exchange between said first electronic lockbox and said first electronic key, using said first and second short range wireless communications devices; (i) at said first electronic key, receiving a first data message from said first electronic lockbox, said first data message at least containing a first identity designator for said first electronic lockbox; and (ii) storing said first identity designator in said second memory circuit; (e) at said first electronic key, beginning an elapsed time counter; (f) waiting for a second data exchange between one of said plurality of electronic lockboxes and said first electronic key, and if said elapsed time counter equals or exceeds a predetermined time value, then under the control of said second processing circuit, disabling said first electronic key; and (g) waiting for a second data exchange between one of said plurality of electronic lockboxes and said first electronic key, and if said elapsed time counter does not equal or exceed said predetermined time value, then allow said first electronic key to continue normal functions; (i) upon initiating said second data exchange between one of said plurality of electronic lockboxes and said first electronic key; (ii) at said first electronic key, receiving a second data message from one of said plurality of electronic lockboxes, said second data message at least containing a second identity designator for an electronic lockbox; and (iii) determining if said second identity designator is equal to said first identity designator, and; (A) if so, then under the control of said second processing circuit, allowing said first electronic key to continue normal functions; (B) if not, then under the control of said second processing circuit, disabling said first electronic key. - View Dependent Claims (15, 16, 17)
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18. A method for operating an electronic lockbox system, said method comprising:
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(a) providing a plurality of electronic lockboxes and a plurality of secure memory cards; (b) of said plurality of electronic lockboxes, providing a first electronic lockbox having;
a first processing circuit, a first memory circuit, a data entry device, a first card reader circuit, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment;(c) of said plurality of secure memory cards, providing a portable first secure memory card having a second memory circuit, and a card reader interface; (d) initiating a data exchange between said first electronic lockbox and said first secure memory card, using said card reader circuit and said card reader interface; (i) at said first electronic lockbox, retrieving first data from said first secure memory card, said data containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then allowing access if said first secure memory card'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) temporarily disabling effective operation of said first secure memory card from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said sensor; (e) at said first electronic lockbox, retrieving second data from said first secure memory card that contains an identity designator of the “
last lockbox visited”
by said first secure memory card; and(f) if said identity designator in said second data corresponds to said first electronic lockbox, then said first secure memory card automatically remains enabled to function in all normal ways, including for accessing the other of said plurality of electronic lockboxes. - View Dependent Claims (19)
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20. A method for operating an electronic lockbox system, said method comprising:
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(a) providing a plurality of electronic lockboxes and a plurality of secure memory cards; (b) of said plurality of electronic lockboxes, providing a first electronic lockbox having;
a first processing circuit, a first memory circuit, a data entry device, a first card reader circuit, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment;(c) of said plurality of secure memory cards, providing a portable first secure memory card having a second memory circuit, and a card reader interface; (d) initiating a data exchange between said first electronic lockbox and said first secure memory card, using said card reader circuit and said card reader interface; (i) at said first electronic lockbox, retrieving first data from said first secure memory card, said data containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then allowing access if said first secure memory card'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) temporarily disabling effective operation of said first secure memory card from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said sensor; (e) at said first electronic lockbox, retrieving second data from said first secure memory card that contains an identity designator of the “
last lockbox visited”
by said first secure memory card; and(f) if said identity designator in said second data does not correspond to said first electronic lockbox, then sending fourth data from said first electronic lockbox to said first secure memory card that writes a data value into a predetermined memory location of said second memory circuit which causes said first secure memory card to be placed into a disable mode that prevents said first secure memory card from accessing the other of said plurality of electronic lockboxes. - View Dependent Claims (21, 22)
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23. A method for operating an electronic lockbox system, said method comprising:
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(a) providing a plurality of electronic lockboxes and a plurality of secure memory cards; (b) of said plurality of electronic lockboxes, providing a first electronic lockbox having;
a first processing circuit, a first memory circuit, a data entry device, a first card reader circuit, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment;(c) of said plurality of secure memory cards, providing a portable first secure memory card having a second memory circuit, and a card reader interface; and (d) initiating a data exchange between said first electronic lockbox and said first secure memory card, using said card reader circuit and said card reader interface; (i) at said first electronic lockbox, retrieving first data from said first secure memory card, said data containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then allowing access if said first secure memory card'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) temporarily disabling effective operation of said first secure memory card from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said sensor, by writing, under the control of said first processing circuit of the first electronic lockbox, a predetermined first code in said second memory circuit, which allows said first electronic lockbox to continue exchanging messages with said first secure memory card, but which prevents any other of said plurality of electronic lockboxes from being accessed by use of said first secure memory card. - View Dependent Claims (24)
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25. A method for operating an electronic lockbox system, said method comprising:
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(a) providing a plurality of electronic lockboxes and a plurality of secure memory cards; (b) of said plurality of electronic lockboxes, providing a first electronic lockbox having;
a first processing circuit, a first memory circuit, a data entry device, a first card reader circuit, a first secure compartment having a first movable opening element that is under the control of said first processing circuit, and a first sensor for detecting whether a predetermined dwelling key security apparatus is present within said first secure compartment;(c) of said plurality of secure memory cards, providing a portable first secure memory card having a second memory circuit, and a card reader interface; (d) initiating a data exchange between said first electronic lockbox and said first secure memory card, using said card reader circuit and said card reader interface; (i) at said first electronic lockbox, retrieving first data from said first secure memory card, said data containing at least one of; (A) identity information for said first electronic key, and (B) personal ID data regarding a specific human user; (ii) if a user is attempting to access said first secure compartment, then allowing access if said first secure memory card'"'"'s identity information and said specific user'"'"'s personal ID data are authorized to access the first secure compartment, so that said predetermined dwelling key security apparatus can be removed from the first secure compartment; and (iii) temporarily disabling effective operation of said first secure memory card from accessing any other of said plurality of electronic lockboxes except said first electronic lockbox, until said predetermined dwelling key security apparatus is returned to said first secure compartment, as determined by said sensor; (e) at said first electronic lockbox, retrieving second data from said first secure memory card that contains an identity designator of the “
last lockbox visited”
by said first secure memory card; and(f) if said identity designator in said second data corresponds to said first electronic lockbox, then writing, under the control of said first processing circuit of the first electronic lockbox, a predetermined second code in said memory that enables said first secure memory card to function in all normal ways, including for accessing the other of said plurality of electronic lockboxes.
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Specification