Hand held device with an integral access control component

摘要

A composite device includes an RFID device and a controller. The controller allows the RFID to respond to a query from an external source only when the composite device is at a predetermined location. In this manner, a code associated with the RFID is not released by the RFID anywhere in the world except at the location of the query requester.

主权项

1. A portable device comprising:
a radio frequency identification device having an active and a passive mode, wherein, when operating in the active mode, the radio frequency identification device is configured to respond to an external query by at least generating a radio frequency signal including a predetermined code, and wherein, when operating in the passive mode, the radio frequency identification device is configured to not respond to the external query; a geographic locator configured to generate a geographic location signal indicative of a current geographic location of the portable device; and a controller configured to determine, based on the geographic location signal, the current location of the portable device, in response to determining that the current geographic location of the portable device is near a predetermined geographic location, set the radio frequency identification device to the active mode, and, in response to determining that the current geographic location of the portable device is not near the predetermined location, setting the radio frequency identification device to the passive mode.