Graffiti Codes

Graffiti Codes allow users to encode a small piece of information into a physical space, much like a QR code. This work diverges from the camera-scanning model and uses accelerometer-based paths to unlock data. These paths can be drawn onto any surface with analog tools (such as markers), and scanned by tracing them over with a mobile phone. Where a QR code cannot be easily generated in the field, Graffiti Codes only require a marker and a surface.