The Phidgets Linear Touch sensor feeds back your fingers position on the slider. Its and ideal touch interface to your PC!
Use your finger anywhere on this linear touch sensor. This device is an interface kit that will output one Analog channel and two Digital channels. The Analog value represents the position on the circle, one Digital value indicates touch, and the other Digital value indicates proximity.
The PhidgetLinearTouch (yes, they spell it with no spaces in the name!) plugs directly into the USB port of your PC and comes packaged with a custom 6' USB Cable. The bottom of this board is completely flat and will work through up to 1/4" of glass.