My profile photo is in fact a business card with my details inside. It is a barcode readable by Nokia phones with a built-in camera, e.g. N-95.
For more information about this cool thing check this link: http://mobilecodes.nokia.com/scan.htm
Point and shoot your camera phone at the mobile code and if you have a barcode reader preinstalled you will be able to store my details.
Unfortunately, my mobile phone has no camera so I can not check it myself. If you have a mobile phone with a camera and barcode reader please send me a feedback if it really works.