We reported on 3M's miniature projector yesterday – now watch our video to see the product in action.

To recap, the mobile projector is about a 1cm thick and about 4cm tall by 3cm wide - small enough to fit inside portable devices such as mobile phones, PDAs or a digital still camera.

3M is already working with companies that are interested in embedding the projector in devices and while it didn't identify the companies said devices should be here soon.

See the Martyn Williams' video below for more.