You can hide your own message among these QR codes ! Here are the messages that are already encoded in the QR codes. The first one is (upper left) : QR code was created in Japan. The second : Does this really surprise you ? (Note that the QR codes are placed on the cup to look a little like Japanese characters) The third (upper right): if you want to know more, read this... The fourth is an url link to Wikipedia. You can replace one or all the QR codes by your own. If you don't know how to generate a QR code, contact me. You can also chose to play a game of deception and don't change any of these QR codes. Note that the QR codes that have been placed on this cup have a resolution of 1600 by 1600 pixels.