They envision that the technology could let users control wireless devices when their hands are full - answering the phone call while cooking, for instance."It's very unobtrusive. When I put this on, it becomes part of my body.

The device could enable subtle communication in circumstances that require it, such as sending a quick text to a child while attending an important meeting.According to Kao, the device was inspired by the colourful stickers that some women apply to their nails.The researchers envision that a commercial version of their device would have a detachable membrane on its surface, so that users could coordinate surface patterns with their clothes.

And it's easily accessed by the other fingers - even when the user is holding something in his or her hand.For their initial prototype, the researchers built their sensors by printing copper electrodes on sheets of flexible polyester.

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