...
I have several Zenith cards, they are perforated so
1/3 could
be removed for the customer record and the 2/3 length card
remaining could be sent in as a reorder card. They had to
have some funky reader to read the short cards.
Bob
IIRC. the Documation readers (and perhaps others) read the card from the end
rather than from the side. They were typically lower speed, 200-1000 CPM,
maybe less. They picked the card with a vacuum I think, rather than pushing
it with a knife edge (if that's the right term). Thus they could easily
handle cards of any length.
Gil