Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!umd5!purdue!decwrl!ucbvax!WESTEND.COLUMBIA.EDU!simsong
From: simsong@WESTEND.COLUMBIA.EDU (Simson L. Garfinkel)
Newsgroups: comp.dcom.telecom
Subject: mag cards
Message-ID: <8804190231.AA08667@westend.columbia.edu>
Date: 19 Apr 88 02:31:52 GMT
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I'm purchasing a machine that reads and writes the mag strips on
credit cards.

Question:  Does anybody know if credit cards are high field or low
field magnetic systems?

Thanks.