A phone that lets you see through clothes is the stuff of teenage boys’ dreams – and now it’s a reality in Japan.

A third party developer in Tokyo, Yamada Denshi, has developed an add-on to Vodafone handsets, intended to be used as a night filter to allow Big Red’s customers to take pictures with their phones in the dark.



Unfortunately, the night vision camera has an unexpected side effect – in the right circumstances, it allows users to see a lot more than they bargained for.



As well as taking snaps in the dark, the Yamada Denshi infrared filter sees through people’s clothes.



The problem arises because the filter uses the distribution of heat to create its pictures. When attached to a high-end camera, the filter can see though all manner of garments and is reportedly particularly effective on dark bikinis.



The handset most often used with the £100 filter – the V602-SH – is only available in Japan.



A Vodafone spokeswoman confirmed the peeping Tom accessory isn’t a problem in the UK. She added that Yamada Denshi is a third party supplier, Vodafone’s control is limited. “They are not an approved third party,” she said.