Skinput: turning your arm in to a touchscreen

that's so cool

If you get a rash will it auto-dial your doctor's office?

Sounds pretty cool, but guess i gotta eat some more if i want widescreen.

Cool and creepy

There was a videoabout this on TED.com. It's pretty cool, and surprisingly cheap.

Might sound old game but I miss my typewritter sound keyboard... so touch screen...

Annoyed with the tiny touchscreens on today's mobile devices? Well, your forearm can now solve that problem by becoming a part of a skin-based interface that effectively turns your body into a touchscreen, say scientists.An international team has come up with a system, called Skinput, which has the ability to detect the ultralow-frequency sound produced by tapping the skin with a finger, and the microchip-sized "pico" projectors now found in some cellphones, reports New Scientist. According to the scientists, the system beams a keyboard or menu onto the user's forearm and hand from a projector... [More]

I foresee a few problems with this, what if you have very hairy forearms or tattoos? Wouldn't that change the entire thing?

Ok. Wait a second. Am I reading this correctly... A touchscreen on your arm? That ladies and gentlemen is freakin' sweet, but I can't see it really becoming mainstream and practical... Gut feeling.