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US 2022/0190859 A1Published application
Nfc device unlocking method
AssigneeSTMicroelectronics (Grenoble 2) SAS
InventorThomas Kunlin
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Abstract
The present description concerns a method or device wherein an untraceability feature of a first near-field communication device is deactivated by an action on a hardware switch.
Claims20
A method, comprising:
- detecting, by a first near field communication (NFC) device, an electromagnetic field generated by a second NFC device;
- detecting, by a detector circuit of the first NFC device, a change of state of a hardware switch of the first NFC device, the hardware switch comprising an initial state and a post-initial state;
- deactivating an untraceability feature of the first NFC device in response to detecting the change of state of the hardware switch;
- and
- allowing communications between the first NFC device and the second NFC device in response to the deactivating of the untraceability feature.
2 more elements
A first near field communication (NFC) device, comprising:
- an antenna configured to detect an electromagnetic field generated by a second NFC device;
- a hardware switch comprising an initial state and a post-initial state;
- and
- a detector circuit coupled to the hardware switch, the detector circuit configured to detect a change of state of the hardware switch of the first NFC device,
- wherein the hardware switch is configured to:
- deactivate an untraceability feature of the first NFC device in response to detecting the change of state of the hardware switch, and
- allow communications between the first NFC device and the second NFC device in response to the deactivating of the untraceability feature.
4 more elements
A method, comprising:
- detecting, by a first near field communication (NFC) device, an electromagnetic field generated by a second NFC device;
- detecting, by a detector circuit of the first NFC device, a change of state of a hardware switch of the first NFC device, the hardware switch comprising an initial state and a post-initial state;
- determining, in response to detecting that the hardware switch is in the initial state, a communication corresponding to the electromagnetic field being an authentication procedure for accessing, by the second NFC device, the first NFC device in a proprietary mode;
- and
- allowing communications between the first NFC device and the second NFC device in response to determining that the communication is the authentication procedure as an untraceability feature of the first NFC device is activated.
2 more elements
Dependencies are inferred from the claim text.