Behavioral design

The seat adjustment controls for the Mercedes Benz car is an example of good behavioral design. The conceptual model is clear: simply move the picture of the seat the same way you want the real seat to move.

Another is PingPongPlus, a digitally enhanced version of the classic table tennis. It is played with ordinary, un-tethered paddles and balls, and features a "reactive table" that incorporates sensing, sound, and projection technologies. Images of water and a school of fish are projected onto the surface of the ping pong table. Each time the ball hits the table, the computer sense its position, causing the images of ripples to spread out from the ball and the fish to scatter. It enhances the experience of playing ping pong.