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US 8,912,887 B2Granted
RFID tag
AssigneeCardlab Aps
InventorFinn Nielsen
Life of this patent
Estimating the term…
Abstract
An RFID tag comprising a coil and an RFID chip having two inputs/outputs, each input/output being connected to the coil. The tag further comprises an electrical circuit connected to the inputs/outputs, the circuit being adapted to operate in one of two modes, one mode outputting substantially no signal whereby the RFID chip is allowed to operate and a second mode being a mode wherein a signal is output so that the operation of the RFID-chip is interrupted. Alternatively, the circuit may have a lower operating voltage than the RFID-chip and may thus starve the RFID-chip and prevent its operation when desired.
Claims15
An RFID tag comprising:
- a coil;
- an RFID chip having two inputs/outputs, each input/output being connected to the coil;
- an electrical circuit directly connected to the coil and the two inputs/outputs, the electrical circuit being configured to operate in one of a first mode and a second mode, the first mode being a mode wherein substantially no signal is output to the two input/outputs, the second mode being a mode wherein a scrambling signal is output to the two inputs/outputs;
- and
- a switch configured to control in which of the first and second mode the electrical circuit operates in.
2 more elements
Dependencies are inferred from the claim text.