The O'Dwyer VLe "smart gun" from Metal Storm uses a 64-digit electronic keying system to prevent it from being fired by unauthorized operators. It is designed for specialist police teams and for the military.
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The one thing every refrigerator owner should know
One key factor determines how long your food stays fresh (and how much you end up wasting). Sharon Profis shares a few refrigerator organization tips everyone should know on "You're Doing it All Wrong."