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Personal item reminder

  • US 7,323,988 B2
  • Filed: 12/17/2004
  • Issued: 01/29/2008
  • Est. Priority Date: 12/17/2004
  • Status: Expired
First Claim
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1. A system for detecting the presence of items labeled with radio frequency (RFID) tags, comprising:

  • a memory for storing a current list of at least one item;

    an RFID interrogator for sending signals to bigger RFID tags;

    an RFID receiver for receiving and identifying signals transmitted by RFID tags; and

    a tracker for receiving a query from a user through a user interface, for instructing the RFID interrogator which of at least one RFID is to be searched for, for receiving from the RFID receiver an identification of any items in the current list for which the RFID tag is not within detection range, and for displaying on the user interface an identification of any items for which the RFID tag is not within detection range; and

    a location detector for determining a current location of the personal communication device.

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