This is almost James Bond-like. A ring, which saves your and others digital contact details. Where you shake hands with your contact, you exchange digital contact details. The rings exchange and store your information automatically for you to browse through later using the card. The power used to operate the ring is generated from the users body temperature so no plug or batteries are required. Imagine how many new contacts you would have after one night of clubbing with this ring around your finger… It’s still a concept, so we’ll have to wait for this thing to come out.