If you've put yourself into the sort of situation where you're worried about being spied on - say, if you're a nanny or any sort of woman - here's how to locate any spy cameras that may be installed in the vicinity.
The guide, courtesy of tech know-how site Instructables, uses the classic Blue Peter manufacturing tool - a toilet paper roll.
Apparently, by holding the toilet paper tube up to one eye and shining a torch around a room, you're able to pick out small flashes of light reflecting off any camera lenses. All you then have to worry about is the alien mind rays seeing into your thoughts.
(Via Instructables)
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