Wireless Detection System
First Claim
1. A system, comprising:
- a transponder capable of sending a signal; and
a shield capable of preventing said transponder from sending said signal, wherein said transponder and said shield are movable relative to each other to permit a transmission of said signal from said transponder, whereby movement of said transponder and said shield relative to each other is indicated by the presence of said signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A system is disclosed including a transponder and a shield. The transponder may be a radio frequency identification (RFID) transponder and sends a signal to a reader. The shield selectively prevents the transponder from sending the signal. The transponder and the shield are selectively movable relative to each other to permit transmission of the signal from the transponder. A movement of the transponder and the shield relative to each other is indicated by the presence of the signal. Thus, when a signal is present, due to a change or increase of the movement of the shield relative to the transponder, the reader receives an indication of a disturbance or an intrusion.
13 Citations
20 Claims
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1. A system, comprising:
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a transponder capable of sending a signal; and a shield capable of preventing said transponder from sending said signal, wherein said transponder and said shield are movable relative to each other to permit a transmission of said signal from said transponder, whereby movement of said transponder and said shield relative to each other is indicated by the presence of said signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system, comprising:
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a transponder; a shield configured to substantially prevent said transponder from sending a signal; and a reader, whereby a physical movement of at least one of said transponder and said shield allows said transponder to send said signal to said reader. - View Dependent Claims (11, 12, 13, 14)
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15. A system comprising:
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a portal feature; a transponder configured to provide a signal; and a shield configured to selectively substantially complete a Faraday cage about said transponder and substantially inhibit a transmission of said signal when said transponder is caged. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification