Cover layer detection for touch input devices

A computing device, comprising:

• a processing device;
• a housing having an outer face;
• a touch input device in electronic communication with the processing device and configured to sense capacitive touch input through the outer face;
• a first sensor in electronic communication with the processing device, the first sensor positioned at a first location on the housing;
• a second sensor in electronic communication with the processing device, the second sensor positioned at a second location on the housing separate from the first location;
• a memory device in electronic communication with the processing device and having electronic instructions encoded thereon, wherein the electronic instructions, when executed by the processing device, cause the processing device to:
• receive a first signal obtained from the first sensor, the first signal having a first signal characteristic;
• receive a second signal obtained from the second sensor, the second signal having a second signal characteristic;
• detect a difference between the first and second signal characteristics indicative of the first location being covered by a cover layer external to the housing and of the second location not being covered by the cover layer;
• and
• adjust a touch input threshold of the touch input device based on the difference between the first and second signal characteristics.

A computing device, comprising:

• a processing device in electronic communication with:
• a touch input device positioned in a body;
• a first sensor positioned at a first location on the body adjacent the touch input device;
• and
• a second sensor positioned at a second location on the body, the second location being different than the first location;
• and
• a memory device in electronic communication with the processing device and having electronic instructions encoded thereon, wherein the electronic instructions, when executed by the processing device, cause the processing device to:
• receive a first signal from the first sensor;
• receive a second signal from the second sensor;
• determine a difference between the first signal and the second signal;
• and
• adjust a touch input parameter of the touch input device based on the difference between the first signal and the second signal.