Ring detect not just large sweeping gestures with the hand but even minuscule ones made by the finger alone. Ring comes with its own preset gesture for launching and controlling apps. It even comes with its own Ring alphabet to let you write your messages in the air. Ring and Fin sport overgrown ring designs, but they use different technologies. Fin's abilities limit it to your palms and the number of segments on your fingers.
Genius Ring - The World’s First Ring Style Thumb Controller - Genius Ring is a compact mouse device that works with your computer and also doubles up as a presentation aid thanks to its useful laser >>> http://www.geniusnet.com/Genius/wSite/ct?xItem=51791&ctNode=105
Steve Mann: `In Professor Steve Mann -- inventor, physicist, engineer, mathematician, scientist, designer, developer, project director, filmmaker, artist, instrumentalist, author, photographer, actor, activist -- we see so much of the paradigmatic classical Greek philosopher. ... Steve has always been preoccupied by the application of his ideas into form. In this way too, he can be considered a modern day Leonardo Da Vinci.''