How to turn anything into a touch screen theweek.com

"How would you like a toy, steering wheel, wall, or electric guitar with a touch pad?" said Rachel Metz at Technology Review. Most touch screens today are flat, because it can be tricky to add touch responsiveness to bumpy or irregular surfaces. But researchers at Carnegie Mellon University say they have created a "cheap, simple" way to add a touch pad to everyday objects "by spraying them with conductive paint, adding electrodes, and computing where you press on them."