The I/O Brush, developed at the MIT Media Lab, picks up colors and textures from the environment and allows for painting with them on a large digital screen.

At the tip of the brush is a tiny video camera enclosed by a ring-shaped brush. LEDs are used for illumination and pressure sensors trigger image capture of one frame in the normal mode, and a few seconds of video in movie mode. The brush “paints” the captured image or movie onto a back-projected touch screen.