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How do touchpads work?

Apr 18, 2006
Did you know?

Try as I might I don’t really get it, but bascially there’s something about the electrical charge of fingers that makes it possible to distinguish between a finger and, say, a carrot. I have managed to make one work by touching a spoon and then moving the spoon about, but since the spoon was metal and therefore a conductor, I don’t think that counts.

Anyway, may Wikipedia’s endless spring of information never dry out: Touchpad.

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2 Comments

  1. javier  •  Mar 15, 2008 @10:34 pm

    it works with any metalic object, as long as you touch it, even magnets!
    But I still wonder how…

  2. Anonymous  •  Mar 25, 2008 @9:42 am

    “it works with any metalic object, as long as you touch it, even magnets!
    But I still wonder how…”

    That is not true it depends of the type of touchpad for example with the new acer you can’t use a metalic object only your finger read the link if you want to know more, but a magnet i dont know…

    http://en.wikipedia.org/wiki/Touchpad