KarTrak, a bar code system designed to automatically identify rail cars | Hacker News

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		KarTrak, a bar code system designed to automatically identify rail cars (wikipedia.org)
		11 points by rusew on Aug 31, 2014 \| hide \| past \| favorite \| 1 comment

mrow84 on Aug 31, 2014 [–]

This video about the Bus Electronic Scanning Indicator, from the late 1950's, might be of interest as well: https://www.youtube.com/watch?v=qGwZwe6izTg

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