Path: utzoo!attcan!cmtl01!matrox!uvm-gen!uunet!lll-winken!ames!netsys!vector!nobody
From: black%ll-micro@ll-vlsi.arpa (Jerry Glomph Black)
Newsgroups: comp.dcom.telecom
Subject: Kredit Kard Kwestions
Message-ID: <telecom-v09i0028m03@vector.UUCP>
Date: 24 Jan 89 15:50:48 GMT
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X-TELECOM-Digest: volume 9, issue 28, message 3


  First, a comment on the PIN brouhaha: AT&T cards (and BOC cards) always have
had your PIN number right on the card, but as it's a 4-digit number, most
people can remember it.  There are numerous ways to write down your secret code
numbers on a wallet card so as to maintain security: use 10's complement, or
subtract 1 from each digit, or you-name-it.

  I'm a bit perplexed by the 'international' number
on the bottom: 1M,<10-digit phone no.>,<1 digit>. It seems pretty easy to
guess or 'exhaustively' determine the digit for anyone, if it only takes a
maximum of 10 tries!

  A mundane question: I have a Sprint FON card. It gives the 800-877-8000
number to access the service, but no mention of a 950-1022 or whatever
the local access # is.  Do you get a cheaper rate if you avoid the 800 number?
The scanty documents which accompanied the card give no clue. Is this another
case of deviousness, or what?

JG Black, black@micro@LL-VLSI.ARPA