Send to a Friend

FireMadeFlesh's avatar

How does a laptop mouse pad know what is touching it?

Asked by FireMadeFlesh (16593points) March 13th, 2011

Laptop mouse pads don’t seem to work unless used with a naked finger. They don’t work with gloves, plastics, or even fingernails if you use the back of your finger. I think the same may be true of some newer touch screens. How do they distinguish between different surfaces?

Using Fluther

or

Using Email

Separate multiple emails with commas.
We’ll only use these emails for this message.