> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[email protected]] On Behalf Of Paul Gilmartin > Sent: Friday, January 08, 2010 2:34 PM > To: [email protected] > Subject: Re: y2k10 problem with credit cards in Germany > > On Fri, 8 Jan 2010 11:22:52 -0800, Charles Mills wrote: > > > >But isn't the problem being described backwards? Is the > external symptom > >expired cards not being recognized as expired, or is it > valid cards being > >treated as though expired? Assuming the latter, the problem > would seem to be > >not that an expiration date is being misinterpreted but > rather that today's > >date is being misinterpreted. The card "knows" it expires in 2010 but > >"thinks" today's date is 8 January 2016. If so, you can't > "fix" the machines > >(other than to provide the mag stripe workaround), you have > to "fix" the > >cards by reprogramming or reissuing them. There's no > "window" solution > >possible; the only solution is fixing the chips. Am I wrong? > > > It's unlikely that the cards contain a crystal clock and > a battery to run it. So, the ATM supplies the date, x'2010' > to the card which misinterprets it as 2016 and reports itself > as expired. > > -- gil
Or, similarily, the card does no processing, just reports the expire date to the ATM as x'0A' (miscoded at the factory), and the ATM expects a BCD 0x'10'. 0x0A < 0x10, so the ATM thinks the card is expired. -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * (817)-961-6183 cell [email protected] * www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
