Screen codes: visual hyperlinks for displays

We present ‘Screen codes’ - a space- and time-efficient, aesthetically compelling method for transferring data from a display to a camera-equipped mobile device. Screen codes encode data as a grid of luminosity fluctuations within an arbitrary image, displayed on the video screen and decoded on a mobile device. These ‘twinkling’ images are a form of ‘visual hyperlink’, by which users can move dynamically generated content to and from their mobile devices. They help bridge the ‘content divide’ between mobile and fixed computing.

• Type: Conference
• Year: 2008
• Where: WMCSA
• Authors: John P. Collomosse, Tim Kindberg
• Keywords: Camera-equipped Mobile Device, Mobile Computing, Mobile Devices, WMCSA 2008, ‘Screen Codes