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Page last updated at 09:14 GMT, Friday, 1 June 2012 10:14 UK

How good is the latest personal security tech?


While smartphones and other portable devices cannot do karate, they do aim to improve our personal security and allow loved ones to keep track of each other.

But how far should we rely on gadgets to keep us safe? Lara Lewington reviews some of the latest personal security technology.

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