The front headlamps of the Concept GLA are each fitted with a laser-beam projector.

ENGADGET: Mercedes-Benz GLA concept puts laser projectors in headlights, redefines SUV

More modern versions of the tool add in a laser beam projector, which allows builders to level out the device and "draw" a long line of light across a wall, indicating an exactly level surface.

FORBES: No. 18 The Level

The MirageTable uses a 3D-video projector to beam images onto a sheet of curved white plastic placed in front of the user.

BBC: MirageTable demonstration

Sammy's latest phone announced for the show is the Galaxy Beam, a refreshed version of the projector phone, with a bit fancier specs.

ENGADGET: Topic: Mobile