CipherCode: A Visual Tagging SDK with Encryption and Parameterisation

Cell phones now pack as much computing power as the high-end desktop of a decade ago. This makes non-trivial mobile applications possible. Interacting with them is, however, a significant challenge due to the small size and limitations of the keypad. Because many new phone models are equipped with an integrated camera, there is growing interest in the use of visual tags to more easily provide inputs to mobile applications. A number of tag designs have been proposed, but more needs to be done in this yet nascent technology. We present CipherCode, a visual tagging system designed for speed, accuracy and compactness. CipherCode includes encryption and parameterisation, features not found in most other visual tagging schemes. We have made CipherCode freely available on the Web as an open-source SDK in order to ignite broader interest and participation in creating highly usable visual tags.