What Business Card? Just Scan My QR Code

Everywhere you look at the South by Southwest conference this week, you see QR codes. The square "quick response" codes turn URLs, vCards, or any kind of text into a jumble of pixels that you can scan onto your smartphone instantaneously, no typing required. At SXSW, QR codes appeared on flyers, postcards, business cards, t-shirts, stickers, and swag. Organizers of the Austin gathering for film, music, and Web geeks even included a QR code on every registrant's badge to cut down on paper...