Like barcode, QR code is also an “optical machine-readable representation of data”. But it could store more much data then barcode and the 2 dimensional images allows the data stored inside to be read from any angle.
(from wiki)
You now could see QR code everywhere in Japan. Shops, websites, business card, as long as there are needs. The wide-spread of QR code is mainly due to the birth of smart phone. The new “computer/phone”allows user use their hand held mobile device to scan the item and obtain information. Item price, where can they find it, where it was made, basically just every information you may want to know.
↑ QR code for IE World URL
You could just use a camera phone to take this picture down, run a simple decoder and the next moment you will be showing the frontpage of IE World. No more typo, no more long url to be remember, no more trouble in telling the url, the convenient it brings sure is one of the reason for its success in Japan. The success of QR code is also a product of many new things that is only be around 3 to 4 years like the rising popularity of camera phones and better network connection (wifi, 3G etc). The need of improvement is always there, a real innovation that being put in the correct time and correct place have no reason for not success.
