Microsoft Research is working on a capacitive sensor technology which would allow users to control their smartphone without removing their phone from their pocket.
In the prototype consists of a custom multi-touch capacitive sensor mounted on the back of a smartphone, which appears to be a Samsung Focus, but with low level access to the existing capacitive sensors in the phone no additional hardware would be required.
While the creators of the technology envision users being able to respond to text messages by touch and also without removing the phone from your pocket, the other scenario of being able to control music playback without removing the phone from your pocket sounds even better, and wont make people wonder why you appear to be fondling your groin
Read more about the technology at Microsoft Research here.
Via NY Times.com