Extended functionality of RFID devices
First Claim
1. An RFID device comprising:
- a data memory;
an electronic circuit arrangement coupled to the data memory, the electronic circuit arrangement having a first operational configuration and a second operational configuration; and
a communication interface coupled to the electronic circuit arrangement,wherein, in response to a control command, the electronic circuit arrangement is configured to be switched irreversibly from the first operational configuration to the second operational configuration,wherein, in the first operational configuration, the RFID device is configured to communicate with a standard RFID reader via the communication interface,wherein, in the second operational configuration, the communication with the standard RFID reader is disabled and the RFID device is configured to communicate with a readout-RFID device by irreversibly switching from an inductive coupling mode to a capacitive coupling mode, andwherein the electronic circuit arrangement comprises a switch configured to modify an operating frequency of the RFID device by disconnecting an operation capacitor from an oscillating circuit.
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Accused Products
Abstract
It is described a RFID device (231a, 231b, 231c, 331) comprising a data memory (236) and an electronic circuit arrangement (237, 238, 239, 247) coupled thereto. The electronic circuit arrangement has a first and a second operational configuration, wherein by receiving a control command (250a) the electronic circuit arrangement can be switched irreversibly from the first to the second configuration. The RFID device further comprises a communication interface (245) being coupled to the electronic circuit arrangement. In the first configuration the RFID device is adapted to communicate with a standard RFID reader (110) via the communication interface. In the second configuration the communication with the standard RFID reader is disabled and the RFID device is adapted to communicate with a readout-RFID device (370). The RFID device may be equipped with a secondary communication interface that can be used to communicate with the RFID device in a privacy-preserving manner. After the RFID device has been disabled, the secondary interface can be used to access data in a secure manner.
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Citations
16 Claims
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1. An RFID device comprising:
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a data memory; an electronic circuit arrangement coupled to the data memory, the electronic circuit arrangement having a first operational configuration and a second operational configuration; and a communication interface coupled to the electronic circuit arrangement, wherein, in response to a control command, the electronic circuit arrangement is configured to be switched irreversibly from the first operational configuration to the second operational configuration, wherein, in the first operational configuration, the RFID device is configured to communicate with a standard RFID reader via the communication interface, wherein, in the second operational configuration, the communication with the standard RFID reader is disabled and the RFID device is configured to communicate with a readout-RFID device by irreversibly switching from an inductive coupling mode to a capacitive coupling mode, and wherein the electronic circuit arrangement comprises a switch configured to modify an operating frequency of the RFID device by disconnecting an operation capacitor from an oscillating circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 13, 14)
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10. An RFID system comprising:
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an RFID device; and a readout-RFID device including a readout communication interface; the RFID device comprising; a data memory; an electronic circuit arrangement coupled to the data memory; the electronic circuit arrangement having a first operational configuration and a second operational configuration; a communication interface coupled to the electronic circuit arrangement, wherein, the readout communication interface is configured to communicate with the RFID device when the electronic circuit arrangement of the RFID device is in the second operational configuration, wherein, in the first operational configuration, the RFID device is configured to communicate with a standard RFID reader via the communication interface, wherein in the second operational configuration, the communication between the RFID device and the standard RFID reader is disabled and the RFID device is configured to communicate with the readout-RFID device by irreversibly switching from an inductive coupling mode to a capacitive coupling mode, and wherein the readout-RFID device is configured to communicate with the standard RFID reader so that the standard reader can access information stored in the data memory of the irreversibly switched RFID device through the readout-RFID device, and wherein the electronic circuit arrangement comprises a switch configured to modify an operating frequency of the RFID device by disconnecting an operation capacitor from an oscillating circuit. - View Dependent Claims (11, 15)
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12. A method for extracting information stored on a RFID device comprising the acts of:
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receiving a control command by the RFID device; in response to the control command, irreversibly switching the RFID device from a first operational configuration to a second operational configuration wherein, in the first operational configuration, the RFID device is configured to communicate with a first RFID reader and wherein, in the second operational configuration, the RFID device is configured to communicate with a second RFID reader, wherein the irreversibly switching act irreversibly switches the RFID device from an inductive coupling mode to a capacitive coupling mode to disable communication with the first RFID reader and enable communication with the second RFID reader, and wherein the irreversibly switching act includes modifying an operating frequency of the RFID device by disconnecting an operation capacitor from an oscillating circuit; and extracting the information from the RFID device by the second RFID reader; and transmitting the information from the second RFID reader to the first RFID reader. - View Dependent Claims (16)
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Specification