I wanted to have a cool personal card but I wanted to be a little different and really geek-ish of course. So after some time thinking about the way i get some ideas and ane of them is this. A QR based card with some tweaking to make it appealing.
A lot of variations can be made and some ads are using this approach to get more people to photograph the qr codes. In my opinion this also helps to extend the social gap between a qr code and a bar code.
The Pretty QR library also gave me enoght help to create a really cool qr code and the result is fantastic. I'm starting to port it to Ruby so hopefully in some time i will be uploading it to github.