ELI5- How does your phone know when you touch the screen?
In: Technology
There’s a couple different types of touch screens.
One screen senses the electric current. Your body conducts electricity, so your phone senses the current and reacts accordingly. It’s why you can’t use another object like your fingernail or a stylus on something like an iPhone.
There are some screens where your touch interrupts the flow of electric current. These are typically the screens that allow non-human use such has a stylus.
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