| CPC G06F 21/34 (2013.01) [G06F 21/32 (2013.01); G06F 2221/2117 (2013.01)] | 51 Claims |

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1. A computer system configured to communicate with one or more biometric sensors, one or more input devices, and an external accessory device, the computer system comprising:
one or more processors; and
memory storing one or more programs configured to be executed by the one or more processors, the one or more programs including instructions for:
receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state;
in response to receiving the request to unlock the computer system:
in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and
in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with the enrolled biometric feature, causing an output of a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system; and
after causing the output of the prompt:
in accordance with a determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state; and
in accordance with a determination that the one or more interactions with the external accessory device have not been detected, maintaining the computer system in the locked state.
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