A resistive touchscreen is a type of touch-sensitive display that works by detecting pressure applied to the screen.
[2] It is composed of two flexible sheets coated with a resistive material and separated by an air gap or microdots.
For example, during the operation of a four-wire touchscreen, a uniform, unidirectional voltage gradient is applied to the first sheet.
These operations occur within a few milliseconds,[4][5] registering the exact touch location as contact is made, provided the screen has been properly calibrated for variations in resistivity.
Single-touch screens register multiple touch inputs in their balanced location and pressure levels.