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Old July 29th, 2008, 14:04   #2
Join Date: Jul 2008
Location: Istanbul
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Heres a system that MIGHT be using piezos to dedect BB sounds
But no information given at all, it can't be "pressure sensitive" stuff since that wouldn't be that easy to build.

M.I.L.E.S. system-ish laser tagging
Check out the receivers and optics, those stuff have long range and receivers pick signals really nice, also hidden in neatly build domes.
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