[net.misc] QUERY about bank cards

ziegler@lzmi.UUCP (08/29/83)

This may be the wrong place for this request, but I'm
new to the net, so here goes...

Does anybody out there in netland have any information
(pointers will do) about bank cards?  I'm talking about
the ones with magnetic stripes that you use in an
automatic teller machine, as well as credit cards in
general.  What I'd like to know is the following:

     - What is on the stripe, and in what format?
     - Is there any information content in the
       number on the front, or are they just 
       randomly assigned?  (Check digits are not
       of interest.)
     - How do automatic teller machines and point-
       of-sale credit card readers talk to the
       host?  (Protocols, networks, etc)

I'm not interested in flames about the banking industry,
reminiscences on personal experiences with dehumanizing
machines, or credit card rip-off schemes.  Just hard
facts, please.  Respond by mail to
        ...hogpc!pegasus!lzmi!ziegler
and if there's sufficient interest I'll summarize to the
net in a couple of weeks.  Thanks.

          Joe Ziegler
          ...hogpc!pegasus!lzmi!ziegler
          (or ...mhtsa!lzut!ziegler)

ziegler@lzmi.UUCP (08/29/83)

Sorry about that -- that second address should be
       ...mhtsa!lznv!ziegler