Now here is a clever use for the digital cameras that come with every mobile phone these days. QR Codes are similar to bar codes and can store about 3 Kb of binary data, enough for 4000 characters (or 1800 Japanese characters). To read it, just take a picture of it with you mobile phone, which recognises the format and can display the content. This is a much faster way to enter a URL or email address into a phone, and it is really getting popular for print advertisements or on business cards. To the left you can see the code for 72game.com, which also has a small mobile section with ring tones and background images for download.