This disclosure describes techniques to continuously sense the presence of an authenticated finger on a fingerprint sensor (or other biometric, such as a verified face in the field of view of a camera) of a device to enable multiple secure device actions. A user’s finger and fingerprint are sensed by the device sensor and authentication is performed for the user. The user remains authenticated while the finger maintains contact on the sensor, allowing the user to perform different secure actions without having to re-authenticate for each secure action that is performed while contact between the authenticated finger and the sensor is maintained. This technique can save time, reduce computational load and software complexity, and reduce user toil and annoyance of repeated fingerprint authentication. The described features also provide additional security due to continuous engagement of the fingerprint sensor by the user.

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Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.