Acoustic Pulse Recognition Specifications
Mechanical
Input Method Finger, finger nail, gloved hand, or stylus activation
Electrical
Position Accuracy 1% max. error
Resolution Accuracy Touchpoint density is based on controller resolution of 4096 x 4096
Touch Activation Force Typically 2 to 3 ounces (55 to 85 grams)
Controller Board: USB 1.1
Optical
Light Transmission 90%+/-5%
Environmental
Chemical resistance The touch activation area of the touchscreen is resistant to chemicals
that do not affect glass such as: acetone, toluene, methyl ethyl ketone,
isopropyl alcohol, methyl alcohol, ethyl acetate, ammonia-based glass
cleaners, gasoline, kerosene, vinegar
Durability
Surface Durability Surface durability is that of glass, Mohs’ hardness rating of 7
Expected Life No known wear-out mechanism, as there are no layers, coatings, or moving
parts. APR technology has been operationally tested to more than 50
million touches in one location without failure, using a stylus similar
finger.

C-37