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The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are desc

The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.

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[ We claim:] [1.]1. A method of using a portable RFID device with a group of items each having an RFID tag, comprising the steps of:(a) inputting information to the device describing a certain item or class of items;(b) scanning the RFID tags associated with each item in the group of items;(c) recei

[ We claim:] [1.]1. A method of using a portable RFID device with a group of items each having an RFID tag, comprising the steps of:(a) inputting information to the device describing a certain item or class of items;(b) scanning the RFID tags associated with each item in the group of items;(c) receiving signals from each of the scanned RFID tags; and(d) comparing the received signals to the information input to the device to determine whether the certain item or class of items are present among the group of items.