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news.bbc.co.uk/newsbeat/hi/technology/newsid_7750000/7750010.stm
With all due respect, not really "new", they are known to be around before 2000
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This should be the "original" video
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On FOX news
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(though I could not find trace of the often cited article by Lucrezia Cuen on abcnews.com, it seems that first report is the one on The Register by Kieren McCarthy)
There are also around (though not as lethal) "Taser" or "Stungun" cellphones
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jaclaz