How Does a Touchscreen Know Where You Tap?

Imagine the screen is like a pizza. When you tap it, your finger takes away a little bit of electricity, and the screen knows exactly where you took it from! It uses invisible dots called sensors to feel your touch and figure out what you're trying to do.

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Examples

Your finger takes away some of the electricity from the pizza-like surface of the screen.
Tapping your phone’s screen feels like you're playing hide-and-seek with invisible dots that know where you are.
You swipe a picture across the screen, and it moves, your finger is whispering secrets to the sensors beneath.

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Categories: Technology · touchscreen· technology· smartphones· user interface· sensors