DataGlyphs – a ‘robust and unobtrusive method of embedding computer-readable data on surfaces such as paper, labels, plastic, glass, or metal’ by Xerox Parc. Dataglyphs use a pattern of forward and backward slashes to represent ones and zeroes, and at 600 dpi you can get up to 1kb per square inch of printed material. Clever stuff.
Adrian Hon
mssv 