Have you heard of a QR Code? Its a new and cool way for people with smart phones to quickly be directed to a website or page.
For example here is a QR Code for my website:
If you have the QR Code Scanner on your smart phone (usually free) Scan this code and it will direct you right to my website. Very cool! You will start to see these codes everywhere, in store windows, on For Sale signs etc... for easy access to information on listing information, price, and pictures.