Multitouch

[soulcrusher]

Hey,

I'm having a tought here...
On a dual, if you press on the touchscreen with two fingers (on on each side of the screen) the touchscreen recognizes both and thinks you pressed between the two spots (sorry, might be a little confusing added pic for understanding;))
Many pda's cant handle a second press on the touchscreen, so i was wondering: if a dual can handle 2 simultaneous inputs, can multitouch be able to work (like typing 2 letters or use gestures like zooming on an iphone OR, scroll with 2 fingers like the mousepad on a macbook and select things with a single finger:p)
Is it even possible to get it working in windows mobile?? Or has it nothing to do with the touchscreen and is it just the os your using?
http://www.freewebs.com/battlezone100/touchscreen.jpg

[fritsypeij]

I guess not, because multitouch technology uses infrared (warmth detection).
I'm guessing that the touch dual is using resistive touch technology, which captures your position using x- and y-axis coordinates.
Than puts them together.
When you touch multiple places, the microcontroller makes an average of the two coordinates.
That function is also needed for thumb control, cause your thumb obviously has a bigger contact area than 1 pixel.
When you use your thumb to push a button the chip calculates the center of the pressure, so it will only give one coordinate.

Sorry for my somewhat hard to read (cause i'm not WWE) explanation, but I really think you shouldn't hope for it.

Edit: And the OS isn't made for multitouch usage. Try using two mouses on your windows pc, you won't see two cursors ;) which is somewhat a non-argument ofcourse, but multitouch has to be programmed in the OS.

[wig]

actually multitouch has nothing to do with the TYPE of touch pad... furthermore, if you're referring to the iPhone - it's capacitive... i.e. it uses the human body's ability to store electricity to sense the point of touch. The touch screens on most phones are resistive in that they press two plates together to create a resistance in the electrical flow.

As far as multitouch itself - that's mainly an OS thing.

[fritsypeij]

furthermore, if you're referring to the iPhone - it's capacitive...

You're right ;) here is info about the iPhone's touchscreen: http://www.ipodobserver.com/story/31942
Near-infrared is used in the Microsoft Surface tables http://arstechnica.com/news.ars/post/20070530-what-lurks-below-microsofts-surface-a-qa-with-microsoft.html
More info about (other kinds of) touch types: http://en.wikipedia.org/wiki/Touchscreen
But believe me when I say that resistive touch technology doesn't support multi-touch though.

[the_fish]

Hey,

I'm having a tought here...
On a dual, if you press on the touchscreen with two fingers (on on each side of the screen) the touchscreen recognizes both and thinks you pressed between the two spots (sorry, might be a little confusing added pic for understanding;))
Many pda's cant handle a second press on the touchscreen, so i was wondering: if a dual can handle 2 simultaneous inputs, can multitouch be able to work (like typing 2 letters or use gestures like zooming on an iphone OR, scroll with 2 fingers like the mousepad on a macbook and select things with a single finger:p)
Is it even possible to get it working in windows mobile?? Or has it nothing to do with the touchscreen and is it just the os your using?
http://www.freewebs.com/battlezone100/touchscreen.jpg

hi

http://www.flicksoftware.com/research/index_files/Page375.htm

the bad thing is it wasnt realeased yet but theres a video.
i dont think this is like iphones technology but it is multitouch ;)

[fritsypeij]

Hahaha! Okay, i'll shut up then ;)