In this case, the glass surface of the monitor is provided with a conductive layer, which usually consists of indium-tin oxide (ITO). This material is transparent in very low strength. This layer is connected to electrodes that are located on the edges of the monitor. In this way, a uniform electrical field is generated on the surface of the monitor. In other words, the surface is evenly charged. When a finger approaches this electric field, part of the load jumps over to the finger. This disorder is then perceived by the control of the monitor. With the first touchscreens, the touch layer was attached to the outside. It therefore quickly used up what restricted the service life of the product. Nowadays, the algorithms for the touch detection are developed so far that a greater distance.
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