Magnetic wood - the new mobile phone squelcher

There's a huge market in Asia for mobile phone squelchers - in Hong Kong for example, people don't think twice about making and receiving calls in the cinema and theatre. Of course, mobile phone jamming is illegal in the UK because it can cause interference outside of the building it's covering. But now, a Japanese team of boffins, based at the University of Morioka have come up with an new spill-free way of squelching mobile signals - magnetic wood.

Thick as two short planks

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