Security cameras and a mobile phone help man track down mysterious house guest

A homeless woman was recently arrested in Tokyo after living undetected in a man's closet for a year and sneaking food out of his kitchen. It was the missing food that tipped him off, so he installed some security cameras in his home to transmit images to his phone. Some motion was detected, so he called the police, and soon enough they spotted her in the closet -- where she had planted a mattress.