Viewstream by Digital View

It's a telly, right?

It's a tiny shelf-edge screen for retailers wanting to ride the new wave of digital signage.

Just how tiny is it?

The smallest in the world, according to the manufacturers. It has a 4-inch footprint.

How do they do it?

The screen uses software-based flash memory rather than a disk drive to store video, so no need for a bulky fan.

So small you might miss it?

Maybe, but it won't miss you. The device can be equipped with a motion sensor, so that it flicks on as you go by.