| General > General Technical Chat |
| Chip on Apple credit card fails |
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| wraper:
IMHO case being metal increases the chance of ESD damage as there is a current path for a spark to jump from IC. As you insert it into PoS terminal, you hold its metal enclosure while IC is connected to a device with different electric potential. |
| amyk:
If you have a smartcard reader you might be able to see if it responds at all. |
| IanB:
I have occasionally had a chip read failure on one of my cards (not Apple). The suggestion was to clean it a bit with a soft cloth to remove grease and fingerprints. That seemed to fix the issue for me. |
| Bud:
--- Quote from: tkamiya on December 11, 2021, 06:06:30 pm ---Mag stripe works. Just the "chip" part that fails. I've tested it at multiple shops using different readers. Once the chip fails, it doesn't work at any store. (at least I check it at 3 stores before asking for a replacement) OK, tell me about how to hold correctly, and the proper secret handshake with the casher. --- End quote --- I can think of encryption keys misconfiguration on card issuance side, chip bonding failures and merchants's terminals having issues with payment processing network, whatever payment processor company Apple is using for card transactions. Either one would cause multiple reports from customers. How widespread the issue is? |
| tkamiya:
The card itself is issued by Goldman Sachs. I have no idea who actually manufactured and individualized cards data. I'm guessing a bad batch. 5 times is just too much failure rate. Before this, I just had one failure on ordinary VISA card. |
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