Did you know that most new mobile phones can read bar codes? The code to the left is called a QR (short for Quick Response) code or 2D barcode. A QR code is a cell phone readable bar code that can store phone numbers, links, email addresses and any kind of text.

If your iPhone or Android phone doesn't have a QR code reader, try the Kaywa reader. On their site, you can also generate your own QR codes.

Now try it yourself. Use your mobile phone to scan this QR code, then send the message to your friends.

(It says: I use the WOT browser add-on for safe surfing, shopping and searching on the web. You can download it free from http://www.mywot.com/download )