Phones and PDAs have been able to exchange virtual business cards for a few years now, but nobody seems keen on taking up the feature. The problem is, lining your devices up, pairing them as trusted and finding your person on a crowded list of available devices.
Meet the Info Ring. When you shake your new friend’s hand, your contact information is exchanged. You can then sync your ring up with your laptop or PDA or what-have-you, problem solved.
Edit: Sounds scary. I shake a lot of peoples’ hands and I wouldn’t want half of them knowing my contact information. – Blake
Info Rings: Shake hands, exchange contact info [MobileMag]