Help what is the toucscreen sensing?

[garybeck]

I just installed the screen protector that came with my otterbox case. I'm amazed that I don't see a difference in responsiveness of the touchscreen. I'm wondering, what is it sensing? heat? conductivity? Pretty cool that it works with a protector on there.

 

[LNMoton]

It senses heat.

 

[garybeck]

cool, it must be pretty sensitive to work through the protector. wonder if the responsiveness changes with the ambient temperature. like if the device is hot because it's charging, or if it's 95 degrees outside, my finger could be the same temperature as the screen was before I touched it.

 

[JerryScript]

It doesn't sense heat, your finger changes the static charge of the material.

 

[pastafarian]

Here's a good basic explanation.

Giz Explains: The Magic Behind Touchscreens

 

[garybeck]

Here's a good basic explanation.

Giz Explains: The Magic Behind Touchscreens

thanks I take it the Optimus uses the capacitive type described in the article?

 

[JerryScript]

Yes, the Optimus V is capacitive.

 

[Chris951]

Try breathing on your screen and see what happens

 

[pastafarian]

Pretty much all modern smartphones and tablets are capacitive. The previous generation of windows mobile (pre 7) and Palm devices used resistive screens. With a few exceptions, if it comes with a stylus, it's probably resistive. If you see a no name Android tablet for sale with stupid cheap pricing, it's almost certainly resistive and best avoided at any price. I was a long time windows mobile user and still miss having that stylus for quick hand written notes. I don't miss anything else about WM.

 

[LNMoton]

It doesn't sense heat, your finger changes the static charge of the material.

Close enough. That's what a mean to put but somehow couldn't figure out how to say it.