Already used in many countries such as Japan or Switzerland, Mobile or Visual Tag are a type of bar code allowing you to provide information to a terminal, it can be discount coupon, URL, train monthly subscription, coordinates, etc.
To use them, you simply need to take a picture and display them on your PDA or mobile phone in front of a dedicated reader.
If this function is not officially supported in the iPhone, the application iMatrix makes it now possible.
This application perfectly illustrate why it is important for iPhone owners as well as Apple to further open its iPhone application development kit to third-parties.
