Parents, guardians and certain third parties with suspicions can make applications to the police to have checks carried out on individuals.

BBC: Child and mother

What we're about to show you is decidedly low-tech -- it's essentially a projection screen with a sharp curve at the bottom -- but the resulting effect conveys a more realistic 3D image, for certain applications, at least.

ENGADGET: Curved panel gives more depth to 3D projections, we take a look at NAB (video)