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

11 pointsby rusewover 10 years ago

1 comment

mrow84over 10 years ago

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