Fuente: Wipo "Sensorization" A sensor structure (110) for a device includes both a fingerprint sensor (112) and one or more touch sensors (114). The fingerprint sensor and the touch sensors can sense a user's finger touching the sensor structure, and the fingerprint sensor can also sense fingerprint data identifying a fingerprint pattern on the user's finger. The sensor structure serves as an input mechanism to allow a user to input his or her fingerprint for authentication, and also to allow the user to provide inputs to control auxiliary functionality of the device (e.g., volume control, cursor control, phone call control, etc.). A control system (116) automatically determines whether a fingerprint is being input by the user for authentication or whether auxiliary functionality of the device is being controlled by the user depending on whether the finger moves on the sensor structure or whether the finger is stationary on the sensor structure, and based on the determination enables an appropriate one of a fingerprint authentication mode and an auxiliary functionality mode.