A wallet-sized sensor that works with a projector and computer to turn any hard, dumb surface into an interactive display is being introduced to the U.S. market. Early adopters say they are thrilled.

“It’s a tremendous opportunity,” says Andrew Berger, vice president of Parsons Corp., Pasadena, Calif. Berger acquired one of the devices, called a U-Pointer, in late May. He put it to work immediately for engineering design reviews. “You can create an interactive, wall-sized work space with it [and] document comments and change things on the fly. It saves any comments or marks that you make,” Berger says.