| 摘要 |
Disclosed are systems, methods, and devices for identifying a user associated with a wearable electronic device. First, a directed electromagnetic radiation comprising an identifier associated with a user of the wearable electronic device is transmitted to a first target device. In response, a challenge signal is received requesting a verification response verifying the authenticity of the identifier. The wearable electronic device than detects a predefined user input, and responsive to receiving the challenge signal and detecting the predefined user input, transmits a challenge response corresponding to the predefined user input to a second target device. The first and second target devices may be the same device. The predefined user input may be comprise one or more sensed head movements and/or detected user input operations.
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