I am trying to make a large scale resistive touch sensor with 4 FSRs, one for each corner of the rectangular sensor. The pressure that I'm going to be applying will be a moderately pressured finger press. I have heard that FSRs are mostly inaccurate as far as precise pressure goes.
As far as tap sensitivity goes, the FSR seems decent, at 10% change after 10 million taps.
I'm wondering if with a passive load of 2kg, and a dynamic load of 1kg, would the 4 FSRs be sensitive enough to make a decent (512x512 (9-bit accuracy)), reliable resistive touch screen, or are other materials better for the cost? If I were to make this, what would my theoretical accuracy be?