Here’s an interesting social network concept device. The handshake ring
is like one of those James Bond gadgets, where you shake hands with
your secret spy contact and instead of passing money or a secret note,
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.

The more people you meet the more information will be stored, while you
expand your social network. The handshake is the customary greeting
after all, so this device makes sense.

Via Slippery Brick