Using touch input data to improve fingerprint sensor performance

A computing device comprising:

• a memory that stores instructions;
• a presence-sensitive display;
• a fingerprint sensor;
• and
• one or more processors that execute the instructions to:
• detect, with the presence-sensitive display, a first touch input of a finger at a first time;
• while detecting the first touch input, obtain, with the fingerprint sensor, a first portion of a fingerprint of the finger, wherein the fingerprint sensor is configured to obtain the fingerprint through the presence-sensitive display;
• determine a first set of heatmaps associated with the first touch input;
• detect, with the presence-sensitive display, a second touch input of the finger at a second time;
• change a gain value setting of the fingerprint sensor based on the first set of heatmaps;
• while detecting the second touch input, obtain, with the fingerprint sensor, a second portion of the fingerprint of the finger;
• determine a first area of the finger associated with the first portion of the fingerprint and a second area of the finger associated with the second portion of the fingerprint;
• and
• generate an at least partial fingerprint of the finger based on the first portion of the fingerprint, the first area of the finger, the second portion of the fingerprint, and the second area of the finger.

Non-transitory computer-readable storage media comprising instructions that, when executed by one or more processors of a computing device, cause the one or more processors to:

• detect, with a presence-sensitive display of the computing device, a first touch input of a finger at a first time;
• while detecting the first touch input, obtain, with a fingerprint sensor of the computing device, a first portion of a fingerprint of the finger, wherein the fingerprint sensor is configured to obtain the fingerprint through the presence-sensitive display;
• determine a first set of heatmaps associated with the first touch input;
• detect, with the presence-sensitive display, a second touch input of the finger at a second time;
• change a gain value setting of the fingerprint sensor based on the first set of heatmaps;
• while detecting the second touch input, obtain, with the fingerprint sensor, a second portion of the fingerprint of the finger;
• determine a first area of the finger associated with the first portion of the fingerprint and a second area of the finger associated with the second portion of the fingerprint;
• and
• generate an at least partial fingerprint of the finger based on the first portion of the fingerprint, the first area of the finger, the second portion of the fingerprint, and the second area of the finger.