Picture this scenario. Both you and another businesswoman are wearing Info Rings. You shake hands, and exchange relevant business information—email, photo, phone number, which Hyatt suite you're staying in—via your rings. Then, when you go back to your room, you can review and file her information on your PC.
This is only a concept for now, but a concept that seems pretty useful for trade shows where you meet hundreds of people but only remember the name of the annoying guy in the next booth.
Info rings save us from hassle of human interaction [SCI FI Blog]