Device enrollment in a security system
First Claim
1. A method of enrolling devices in a security system containing at least a first controller and at least two other devices, a first RFID reader having a read zone and a first RFID transponder, the method comprising the steps of:
- placing the first controller into an enrollment made;
reducing the transmit power of the first RFID reader to reduce its read zone to an area proximate to the first RFID reader;
placing the first RFID transponder within the reduced read zone of the first RFID reader;
further reducing the transmit power of the first RFID reader, thereby narrowing the size and shape of the read zone, until the first RFID reader detects only the first RFID transponder;
still further reducing the transmit power of the first RFID reader to a predetermined threshold which assures that the first RFID transponder is physically close to the first RFID reader;
exchanging information between the first RFID reader and the first RFID transponder; and
using the exchanged information to enroll a device in the first controller of the security system.
16 Assignments
0 Petitions
Accused Products
Abstract
A method for enrolling devices in a security system based upon RFID techniques. The method prevents unauthorized devices from engaging in communications by and between the various devices in the security system. While the security system may have long RF range during normal operation, the RFID readers of the security system reduce their read range during an enrollment operation. A user must be physically proximate to an RFID reader to enroll any device. The controller has an associated master key RFID transponder containing at least one code necessary for enabling enrollment of an RFID reader. This master key RFID transponder can only be read during enrollment. RFID transponders and RFID readers also exchange at least one code during the enrollment of RFID transponders. The codes can enable encrypted communications during normal system operation.
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Citations
26 Claims
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1. A method of enrolling devices in a security system containing at least a first controller and at least two other devices, a first RFID reader having a read zone and a first RFID transponder, the method comprising the steps of:
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placing the first controller into an enrollment made; reducing the transmit power of the first RFID reader to reduce its read zone to an area proximate to the first RFID reader; placing the first RFID transponder within the reduced read zone of the first RFID reader; further reducing the transmit power of the first RFID reader, thereby narrowing the size and shape of the read zone, until the first RFID reader detects only the first RFID transponder; still further reducing the transmit power of the first RFID reader to a predetermined threshold which assures that the first RFID transponder is physically close to the first RFID reader; exchanging information between the first RFID reader and the first RFID transponder; and using the exchanged information to enroll a device in the first controller of the security system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of enrolling devices in a security system containing at least a first controller and at least two other devices, a first RFID reader having a read zone and a first RFID transponder, the method comprising the steps of:
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placing the first controller into an enrollment mode; reducing the transmit power of the first RFID reader to reduce its read zone to an area proximate to the first RFID reader; placing the first RFID transponder within the reduced read tone or the first RFID reader; further reducing the transmit power of the first RFID reader, thereby narrowing the size and shape of the read zone, until the first RFID reader detects only the first RFID transponder; still further reducing the transmit power of the first RFID reader to a predetermined threshold which assures that the first RFID transponder is physically close to the first RFID reader; exchanging information between the first RFID reader and the first RFID transponder, the exchanged information including at least one code usable in encrypting communications; and using the exchanged information to enroll both the first RFID reader and the first RFID transponder in the first controller of the security system. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of enrolling devices in a security system containing at least a first controller and at least two other devices, a first RFID reader having a read zone and a first RFID transponder, the method comprising the steps of:
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placing the first controller into an enrollment mode; reducing the transmit power of the first RFID reader to reduce its read zone to an area proximate to the first RFID reader; placing the first RFID transponder within the reduced read zone of the first RFID reader; further reducing the transmit power of the first RFID reader, thereby narrowing the size and shape of the read zone, until the first RFID reader detects only the first RFID transponder; still further reducing the transmit power of the first RFID render to a predetermined threshold which assures that the first RFID transponder is physically close to the first RFID reader; exchanging information between the first RFID reader and the first RFID transponder, the exchanged information including at least one code usable in encrypting communications; using the exchanged information to enroll both the first RFID reader and the first RFID transponder in the first controller of the security system; and entering in a table via the first controller enrollment information for the first RFID reader and the first RFID transponder; and storing the enrollment information in the table, wherein the first RFID reader communicates with the first controller only after the first RFID render has been enrolled with the first controller and the first RFID transponder communicates with the first RFID reader only after the first RFID transponder has been enrolled with the first controller. - View Dependent Claims (26)
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Specification