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One Ring to rule them all ... devices
Ring Fin , allowing gestures to control devices, набрало needed $ 100,000 on Indiegogo .
How it works h4>
Fin is worn on the thumb. Ring recognizes the basic movement and clicking on certain areas of the palm. One of the main ring chips that it recognizes each segment of the palm. The figure below shows this clearly. Thus it is possible to turn the hand, for example, a numeric keypad.
You can bind the functional devices on certain parts of the palm and to perform the action enough to touch the place with your thumb.
In addition, you can manipulate the same finger in the air thereby performing certain actions, such as spending top down, change the volume of the TV or mobile device, turn the pages, change channels, etc.
What will be done the same ring h4>
The shell with a degree waterproof IP67 The size is adjustable, promise to make flexible Battery Sensors Contact Compatibility
Planned date of production in July 2014. Dev version will be available from June. 
The estimated price of the ring $ 99 , and the dev version $ 79. In this case, if the project attains $ 150 000, for people who have vision problems Fin will cost $ 59.
Source: habrahabr.ru/post/213043/