User authentication and spoof detection for devices using fingerprint sensor and additional device sensors

A mobile device comprising:

• at least one processor;
• a fingerprint sensor coupled to the at least one processor, wherein the fingerprint sensor is configured to provide sensor data to the at least one processor;
• and
• a plurality of additional sensors coupled to the at least one processor, wherein the one or more additional sensors are configured to provide sensor data to the at least one processor, wherein the additional sensors include at least one additional sensor selected from the group of:
• an inertial measurement unit (IMU), an accelerometer, a gyroscope, an ambient light sensor, a proximity sensor, face detection sensor, a touchscreen, and combinations thereof;
• wherein the at least one processor is configured to perform operations including:
• obtaining a fingerprint image from a user using the fingerprint sensor;
• analyzing the fingerprint image for fingerprint characteristics and determining one or more fingerprint detection scores based on the analyzing, wherein each fingerprint detection score is within a respective score range that includes a respective fingerprint validity threshold;
• in response to the one or more fingerprint detection scores meeting the respective fingerprint validity threshold by greater than a respective particular range of the respective fingerprint validity threshold, providing a positive authentication indication;
• obtaining respective sensor data from each of the additional sensors;
• and
• in response to at least one of the one or more fingerprint detection scores meeting the respective fingerprint validity threshold within the respective particular range of the respective fingerprint validity threshold:
• analyzing the respective sensor data of each additional sensor to determine a respective context score for the additional sensor;
• determining whether each of the respective context scores meets a respective context validity threshold associated with a type of the respective sensor data;
• in response to determining that the respective context scores meet the respective context validity thresholds, accepting the fingerprint image as authentic;
• and
• in response to determining that at least one context score does not meet the respective context validity threshold, providing a negative authentication indication.

A non-transitory computer-readable medium with instructions stored thereon that, when executed by a processor, cause the processor to perform operations comprising:

• obtaining a fingerprint image from a user using a fingerprint sensor of a device;
• analyzing the fingerprint image for fingerprint characteristics and determining one or more fingerprint detection scores based on the analyzing, wherein each fingerprint detection score is within a respective score range that includes a respective fingerprint validity threshold;
• in response to the one or more fingerprint detection scores meeting the respective fingerprint validity threshold by greater than a respective particular range of the respective fingerprint validity threshold, providing a positive authentication indication;
• obtaining respective sensor data from each of a plurality of additional sensors of the device, wherein the plurality of additional sensors include at least one additional sensor selected from the group of:
• an inertial measurement unit (IMU), an accelerometer, a gyroscope, an ambient light sensor, a proximity sensor, face detection sensor, a touchscreen, and combinations thereof;
• and
• in response to at least one of the one or more fingerprint detection scores meeting the respective fingerprint validity threshold within the respective particular range of the respective fingerprint validity threshold:
• analyzing the respective sensor data of each additional sensor to determine a respective context score for the additional sensor;
• determining whether each of the respective context scores meets a respective context validity threshold associated with a type of the respective sensor data;
• in response to determining that the respective context scores meet the respective context validity thresholds, accepting the fingerprint image as authentic;
• and
• in response to determining that at least one context score does not meet the respective context validity threshold, providing a negative authentication indication.