| 摘要 |
Embodiments are directed to automatically unlocking a user device based on proximity to a previously paired accessory. Embodiments include transmitting, by a transmitter of the first device (204), an ultrasound message comprising a personal code exchanged between the first device (204) and a second device (206) in a previous pairing between the first device (204) and the second device (206); receiving, by a receiver of the second device (206), the ultrasound message; determining and initiating storing, by a processor (238) of the second device (206), a timestamp associated with a time the ultrasound message was received by the second device (206); determining, by the processor (238) of the second device (206), the personal code; authenticating, by the processor (238) of the second device (206), the personal code determined from the ultrasound message; and based at least in part on the timestamp, initiating unlocking, by the processor (238) of the second device (206), at least one of the first device (204) or the second device (206). |
