1. A method comprising: receiving a user input of a finger moving across a sensor structure of a mobile device, the sensor structure including a fingerprint sensor, a first touch sensor adjacent to the fingerprint sensor and a second touch sensor adjacent to the fingerprint sensor, the fingerprint sensor situated between the first touch sensor and the second touch sensor, the fingerprint sensor comprising multiple sections; assigning one or more of the multiple sections to one of sensing fingerprint data and sensing movement of the finger across the fingerprint sensor; performing auxiliary functionality of a device based on a pattern of movement of the finger across the sensor structure and sections of the fingerprint sensor assigned to sensing movement; and authenticating a fingerprint of the finger based on fingerprint data sensed by sections of the fingerprint sensor assigned to sensing fingerprint data during the finger moving across the sensor structure.