Introduction
DataGlyph
is a proprietary code developed by Xerox
PARC . The code is made up of a gray background pattern
of small "\"s and "/"s encoding binary
data, including synchronization patterns and error correction.
Each mark can be as short as 1/100th of an inch (0.25mm).
Densities of 1000 8-bit "bytes" per square inch
are possible using this code. DataGlyph is tolerant to ink
marks, bad copies, and even staples through the symbol because
of the internal error correction, randomization of the data.
DataGlyphs are designed to merge with the design of the
product they are printed on. DataGlyphs can be logos or
tints behind text or graphics. Applications include questionnaires,
direct-mail reply forms and surveys and business cards The
symbol is read using an image scanner.
For more information visit www.parc.com
and http://www.parc.com/solutions/dataglyphs/default.html.