Using electrical resistance to estimate force on an electrode during temperature changes

An input device, comprising:

• a plurality of sensor electrodes;
• and
• a processing system coupled to the plurality of sensor electrodes, wherein the processing system is configured to:
• obtain a plurality of capacitive measurements of a sensing region;
• determine a location of an input object using the plurality of capacitive measurements of the sensing region;
• obtain a resistance measurement of the sensing region;
• determine a force value based on the resistance measurement and the location of the input object, wherein determining the force value mitigates a temperature variation of the sensing region affecting the resistance measurement;
• and
• report the force value.

A method comprising:

• obtaining a plurality of capacitive measurements of a sensing region;
• determining a location of an input object using the plurality of capacitive measurements of the sensing region;
• obtaining a resistance measurement of the sensing region;
• determining a force value based on the resistance measurement and the location of the input object, wherein determining the force value mitigates a temperature variation of the sensing region affecting the resistance measurement;
• and
• reporting the force value.