SYSTEMS AND METHODS FOR IDENTIFYING MISSING ITEMS
First Claim
1. A system for identifying missing items, comprising:
- a database storing identifier information for a radio frequency identification (RFID) tag that is associated with a device, the database also having data that identifies the device as missing;
an interrogator for transmitting commands to RFID tags and for receiving replies from RFID tags within a defined area, the interrogator operable to extract identifier information from the received RFID replies; and
a processor coupled to the interrogator and to the database, the processor operable to compare the identifier information from an RFID reply with identifier information stored in the database, the processor further operable to identify when the RFID reply is associated with a missing device.
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Accused Products
Abstract
A method and system for identifying a lost or stolen device is disclosed herein. The system includes: a transmitter, coupled to said device, for transmitting identification information; a receiver for receiving the identification information transmitted by the transmitter, when the transmitter is within a defined distance from the receiver; and a computer, coupled to the receiver for receiving the information from the receiver, and having a database for storing data associated with lost or stolen devices; wherein the computer compares the information with the data, and generates an alarm if the information indicates that the device is lost or stolen. The method includes: receiving information transmitted by a radio frequency identification (RFID) device, coupled to an item, when the item comes within a defined range of a receiver which receives the information; storing data associated with lost or stolen goods in a database coupled to the receiver; comparing the information to the data and determining if the information matches the data associated with the lost or stolen goods; and generating an alarm, if the information matches the data.
78 Citations
24 Claims
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1. A system for identifying missing items, comprising:
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a database storing identifier information for a radio frequency identification (RFID) tag that is associated with a device, the database also having data that identifies the device as missing;
an interrogator for transmitting commands to RFID tags and for receiving replies from RFID tags within a defined area, the interrogator operable to extract identifier information from the received RFID replies; and
a processor coupled to the interrogator and to the database, the processor operable to compare the identifier information from an RFID reply with identifier information stored in the database, the processor further operable to identify when the RFID reply is associated with a missing device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of locating missing items, comprising:
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storing, in a secure database, information associated with a radio frequency identification (RFID) tag, the information correlating the RFID tag with a device and including data that identifies the device as missing, the information further including an identifier for the RFID tag;
transmitting commands to RFID tags that pass through a defined area, the commands requiring any RFID tags within the defined area that authenticate the commands to transmit a reply that includes identification information;
receiving a reply from an RFID tag within the defined area;
extracting identification information from a received RFID reply;
determining if the identification information in the received RFID reply corresponds to the RFID tag identifier that is stored in the database; and
issuing an alert when the received identification information corresponds to the stored identifier. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method for locating missing items, comprising:
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transmitting commands from a plurality of readers via direct sequence spread spectrum (DSSS) radio frequency messages to radio frequency identification (RFID) tags, wherein each of the plurality of readers is associated with a predetermined location;
receiving reply messages communicated from the RFID tags, wherein each of the reply messages includes an identifier;
extracting the identifier from each of the reply messages;
comparing the identifier with entries stored in a secure database, wherein the entries comprise identification information for RFID tags associated with devices that have been identified as lost or stolen; and
alerting an operator when the identifier of one of the reply messages corresponds to identification information in one of the entries stored in a secure database. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification