The conceivable applications are almost infinite. Especially when encoding URLs many different contents are possible. These include homepages, product sites, videos, picture galleries, coupon codes, competitions, contact forms or any other types of online forms, social media sites and so on. Many other contents do not even require an active internet connection of the used phone. Those are . calendar events, WiFi connections or vCards that contain personal contact information which then can easily be added to the address book. QR Codes may be placed on web pages, print ads, products or any other flat surfaces.