| I worked with a number of barcode scanners in the deep dark past with Unix and other Unix-like realtime systems (QNX). Most all of them are serial devices that generate text output to a tty. Using them requires no drivers, and very simple software to handle them, since all the I/O is tty-based. I wrote a time-card program that used standard Symbol scanners to scan a bar-coded user badge to log workers in/out of a steel plant in upstate New York, for example.
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Sometimes, real fast is almost as good as real time.
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