Fingers Tired? Try the iPed

Anyone who thinks that the iPad is a little on the small side might like this project from students at Potsdam's Hasso Plattner Institute in Germany. Multitoe is a touchscreen interface for floors that can tell different users apart merely by the soles of their shoes and the way they walk--ergo, we at FastCompany dub it the iPed. And it's more than merely a surface for playing Interactive Twister.

The technology is known as frustrated total internal reflection, or FTIR, and is already used by...