We love new tech, but it takes a lot to make two PopSci staffers say "Cool!" in unison. That's what happened when Amichai Turm, chief technology officer at Israel-based VKB Ltd., fired up his company's prototype keyboard. The wee 1.4- by 1.4- by 2.6-inch device isn't a keyboard at all, but a small projector that transmits a full QWERTY display onto the surface in front of you. Touch a letter or number, and you hear a comforting clicking sound as your PDA or cellphone registers the input. In our informal tests, the device made surprisingly few errors.