NailO: Wireless Mouse Worn On Thumb 

Researchers at the MIT Media Laboratory are developing a new wearable device that turns the user’s thumbnail into a miniature wireless track pad.

They envision that the technology could let users control wireless devices when their hands are full — answering the phone while cooking, for instance. It could also augment other interfaces, allowing someone texting on a cellphone, say, to toggle between symbol sets without interrupting his or her typing. Finally, it could enable subtle communication in circumstances that require it, such as sending a quick text to a child while attending an important meeting.

A new wearable device, NailO, turns the user’s thumbnail into a miniature wireless track pad. Here, it works as a X-Y coordinate touch pad for a smartphone

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