Quote:
Originally Posted by NatCh
... are fingers negatively charged? Surely they can make a stylus that works with a capacitive touch screen.
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They are indeed, it's how capacitance works. You can make a stylus that does work, but it needs a power source - a small battery will do.
As an example, if you have an iPhone, you probably know that you can tap with a plain stylus all day long and nothing happens, but touch the screen with the negagtive pole of a AAA battery and it reacts just like a finger touch.