IsMyTouchScreenOK is a portable app that allows you to check your LCD or plasma monitor for properly functioning multi-touch.
It is designed to make any non-functioning contact points noticeable immediately. The test process is simple, to start, touch your screen with your finger(s). It will run you through a series of screen tests built to ensure no defective touchpoints are present.
You can utilize IsMyTouchScreenOK to check the functionality of a new touch screen before buying or testing your current touch monitor during the warranty period. You may receive a replacement after the manufacturer is informed of the presence of any touchpoint faults.