Hacker News with Generative AI: Touchscreens

Making Software (makingsoftware.com)
Have you ever wondered how a touch screen knows you are touching it? Well, it has these layers of transparent metal electrodes embedded in the display. When your finger gets close to the screen it causes a disturbance in the magnetic field that the electrodes sense.
Keyboards Influenced by Touchscreens (2011) (eagain.net)