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The resistive system consists of a normal glass panel that is covered with a conductive and a resistive metallic layer. These two layers are held apart by spacers, and a scratch-resistant layer is placed on top of the whole setup. An electrical current runs through the two layers while the monitor is operational. When a user touches the screen, the two layers make contact in that exact spot. The change in the electrical field is noted and the coordinates of the point of contact are calculated by the computer. Once the coordinates are known, a special driver translates the touch into something that the operating system can understand, much as a computer mouse driver translates a mouse's movements into a click or a drag.
Due to the sensors that the electrical pulses pick up on a touch screen, another 'glass' over this Lenovo will only
cause it to have issues. You can use a cover such as the phones have made for monitors though, like this one
(this is example only)
Did you want me to try and find one for you for your Lenovo?
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