I’ve been working with @toddbudnikas at Mission Data on a nifty little web app we’re calling uncard.me. We plan to launch next week. It’s a web-based alternative to the app-based contact sharing solutions. All you’ll need is a competent QRCode reader for your reasonably-current iPhone, Android, or Blackberry device. I’m currently using Qrafter, because it rocks. Screenshots below. And if you see Todd or another member of the Mission Data crew at SXSW Interactive, be sure to say hi!