Smudged… But Your Password Isn’t…
A really cool bit of research from the University of Pennsylvania has looked at how smudges on your smart phone touch screen can be used to guess your password. So, while this is all research at present, as per usual it will only be a matter of time before it is exploited.
So… along with wiping SatNav marks off the windscreen so the burglars don’t pinch your SatNav, you should also think about wiping the marks off the smart phone as well after you have entered your password… bring back the mini-keyboard, all is forgiven! 
Guy Bunker
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