It has a glass overlay with transmitting and receiving piezoelectric transducers for both the X and Y axes.  When you touch the screen, you absorb a portion of the wave traveling across the surface.  The received signal is then compared to the stored digital map, then the change recognized and a coordinated calculated.  The digitized coordinates are transmitted to the computer for processing.

Main Feature:	Application:
1.  High resolution of 4096 x 4096	1.  Computer-based training
2.  Pure-glass touch screens	2.  Vending and ticket sales
3.  Durable, scratch-resistant glass	3.  Lottery, amusement and gaming
surface can continue to work if	4.  Banking/Financial transactions
scratched	5.  Industrial control rooms0
4.  React to finger, glover hand & soft	6.  Electronic catalogs
stylus activation	7.  Public pay phones
5.  Stable "drift-free" operation	8.  Multimedia marketing
6.  Fast, sensitive touch response	9.  Point-of information kiosks
7.  Superior image clarity	10. Bank ATMs