This concept device is designed to exchange basic information with new people when you first meet them by shaking hands. Nowadays people are traveling more often and more easily increasing their opportunities of meeting new people, and expanding their social network.
Shaking hands is a greeting action and this brings the gesture one step further by creating an information transfer function. When people first meet and shake hands the rings on their fingers will start to exchange the users information and store it while the users are shaking hands. (Concept only does not exist...yet)
link: via helpero