[net.general] Computers Don't Like Bank Cards?

sjb (12/24/82)

Recently, and for the first time ever, I have been having a lot
of trouble with my bank card.  Last week, I put it into the machine,
and it spit it out and told me to put it in again the right way.
Well, much to my surprise (and the machine's error), it WAS in the
right way!  So I tried again (and again and again ...) and it kept
spitting it out telling me it was in the wrong way.  So I took it
in, they cleaned it (somehow, I just heard something like an electric
sander going on in a back room...) and it worked fine that day.  This
week I went in and the machine didn't like it again!  Could all the
computers I'm constantly around be demagnetizing my card?