Researchers from Carnegie Mellon University and Microsoft made a system, called Skinput, that can turn your hand or arm into a touchscreen:
NewScientist - Body acoustics can turn your arm into a touchscreen
Interesting, I think.
_________________
1975, ASD: Asperger's Syndrome (diagnosed: October 22, 2009)
Interests: science, experimental psychology, psychophysics, music (listening and playing (guitar)) and visual arts
Don't focus on your weaknesses, focus on your strengths