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Here we have one of the coolest devices in the universe. The CJAM 1000 can jam cellphones, pagers, and Wi-Fi with a quarter mile range. The system is biometrically protected and only available to major government organizations and/or soldiers of fortune. I could definitely see this as being useful in a crowded theatre when some little freak picks up the phone and starts mumbling about what's for dinner.

The bomb beater. [RedFerret]