Pushing the Limits of Touch Screens
http://www.technologyreview.com/computing/38349/

This article discussed how Michael Knuepfel is taking the regular touch screen and making enhancements to it to become more interactive.  Knuepfel, from New York University's Interactive Telecommunications Program, ­created devices to enable the screens to recognize more parts of a user's touches.

He ehances touch screens by detecting the way a user's finger pattern changes  through the electrical charge on the screen.

He also uses pulse, lighting and styling thru different additional products.