How does the touchpad mouse-replacement-thing on my laptop work?

[conuly]

I'm dying of curiosity here.

Comments

[lakidaa.livejournal.com]

Probably like mine. :P

now, the one I really want to know how it works is the little red nubble-replacement mouse.

psuedoedit: "Your finger holds an electrical charge that can be measured in the tolerance of the touchpad. The touchpad has a wire mesh underneath the part you actually touch that can sense your fingers electrical charge. When you move your finger it can sense the moment accross the 'mesh' and it will then send the signal to your computer. The reason why it works when you use paper is because paper isn't a strong enough insulator to disrupt the field that your finger gives off. The reason erasers and metal pieces don't work is because they don't have their own field (at least in the same range as your finger) so the touchpad is not affected by them.

[lakidaa.livejournal.com]

Probably like mine. :P

now, the one I really want to know how it works is the little red nubble-replacement mouse.

psuedoedit: "Your finger holds an electrical charge that can be measured in the tolerance of the touchpad. The touchpad has a wire mesh underneath the part you actually touch that can sense your fingers electrical charge. When you move your finger it can sense the moment accross the 'mesh' and it will then send the signal to your computer. The reason why it works when you use paper is because paper isn't a strong enough insulator to disrupt the field that your finger gives off. The reason erasers and metal pieces don't work is because they don't have their own field (at least in the same range as your finger) so the touchpad is not affected by them.