So the boffins have a new wheeze: a device for crowd control. As the scuffles in Edinburgh show the police aren't exactly being overrun at the moment but it's an odd application of a very useful technology, as I recently discovered.
If you've passed through Heathrow recently you might have been asked to try out the Secure 1000, a millimetre wave scanner that can effectively look under your clothing. I've tried it twice and it's very sharp, picking up a forgotten two pence piece in my back pocket. It does take a few minutes, far too long for practical use, but it's being considered.
Quite how popular it will be in real life I don't know. While undeniably effective your first thought when they let you see the image is usually about trying to get some more exercise. The second is who gets to see the image of you from the front. It is to their credit that the test subject recruiters have shown great restraint given the attractiveness of some air travellers.
And, yep, it'll run Android rather than RiscOS
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