Patent attributes
A mobile device includes a Bluetooth transceiver, the Bluetooth transceiver being in an idle power state when not securely paired to a second Bluetooth transceiver of a peripheral device. The mobile device further includes an audio interface, the audio interface coupled to the Bluetooth transceiver, the audio interface configured to connect to a second audio interface of the peripheral device. The mobile device is configured to establish an out-of-band audio communication channel to the peripheral device by connecting the audio interface to the second audio interface, the mobile device configured to exchange Bluetooth authentication data with the peripheral device via the out-of-band audio communication channel in response to transitioning to an operating state, the mobile device configured to initialize the Bluetooth transceiver with the Bluetooth authentication data to establish an authenticated and cryptographically protected in-band Bluetooth communication channel allowing the mobile device to be securely paired with the peripheral device.
