Path: utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!emory!hubcap!rbrink From: rbrink@hubcap.clemson.edu (Rick Brink) Newsgroups: sci.electronics Subject: Re: credit-card encoding (was Re: Wiegand wires?) Message-ID: <10677@hubcap.clemson.edu> Date: 28 Sep 90 19:38:01 GMT References: <1990Sep25.153854.2812@zoo.toronto.edu> Organization: Clemson University, Clemson, SC Lines: 11 From article <1990Sep25.153854.2812@zoo.toronto.edu>, by henry@zoo.toronto.edu (Henry Spencer): > In article <10960034@hpldola.HP.COM> paul@hpldola.HP.COM (Paul Bame) writes: >>Speaking of credit cards, why don't we use bar codes or some other optical >>method rather than magnetic? Seems like it would be more reliable. > > Magnetic schemes have the vast advantage of being essentially immune to > dirt and surface damage. For something that gets carried in pockets for > years, this is a significant advantage. > -- > TCP/IP: handling tomorrow's loads today| Henry Spencer at U of Toronto Zoology > OSI: handling yesterday's loads someday| henry@zoo.toronto.edu utzoo!henry