In this case, the glass surface of the monitor is covered with a conductive layer, which usually consists of indium tin oxide (ITO). At very low levels, this material is transparent. This layer is connected to electrodes located on the edges of the monitor. In this way, a uniform electric field is created on the surface of the monitor. Or to put it another way: the surface is evenly charged. When a finger approaches this electric field, some of the charge transfers to the finger. This disturbance is then perceived by the monitor control. On the first touchscreens, the touch layer was attached to the outside. It therefore wore out quickly, which limited the lifespan of the product. Nowadays, touch detection algorithms are so advanced that a greater distance between the ITO layer and the f.
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