Why do DS pens/stylus work on DS screens but not on phone screens?
In: Technology
Older touch screens detect *pressure*. You could use literally anything as a stylus, as long as it was applying enough pressure for the device to detect it.
Newer touch screens detect *changes in an electrical field*, which means that when any electrically-conductive material (like a fingertip) even just barely touches them, that’s all it needs. This means that any stylus needs to be conductive as well (most have a soft tip with a conductive material inside so they don’t risk scratching the screen). An old plastic stylus doesn’t conduct electricity, so it’s not detected.
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