Waterloo Labs decided to play “Half-Life, with a suppressed .22 pistol; using accelerometers and LabVIEW, [they] can triangulate the position of where the bullet hits a piece of drywall and generate a mouse click at that location in the game.” Video after the break.

The intensity of the vibrations in each accelerometer is measured to determine where exactly on the board the bullet impacted, which is fed into the host PC, where the coordinate data is translated into an aimed, ingame shot.

[via Gizmodo]