Patent ID: 9613245
Date: 2017-04-04
CPC Classifications: G06F,G06K

Claim:
1. An electronic device comprising: a biometric authentication sensor with activation sensors to detect an object in proximity to the biometric authentication sensor; and a control circuit coupled to the biometric authentication sensor, the control circuit implemented to: activate an authentication operation in response to determining that coverage of the biometric authentication sensor by the object exceeds a predetermined threshold; and provide user feedback associated with the coverage of the biometric authentication sensor in response to determining that the coverage of the biometric authentication sensor does not exceed the predetermined threshold based on the activation sensors, the user feedback being proportional to an amount of the coverage of the biometric authentication sensor by the object, a strong user feedback being provided if the object is closer to the biometric authentication sensor, and a weak user feedback being provided if the object is farther away from the biometric authentication sensor.