(Above: Capacitive touchscreens use an electrostatic field to continuously sample the screen surface for movement and relays that information to a processor that can interpret it. )
I've long been curious about how touchscreens work and never got around to finding out. Here's a great explanation.
By Intel Free Press
Today, largely due to the proliferation of smartphones and tablets such as the Apple iPad, sophisticated touchscreens are a common fixture in our digital lives.
To understand how touch technology works, requires a look back to the basics of how touchscreens evolved from primitive interfaces to chic and powerful digital accessories.