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>it would be important to think about why OpenID/Persona didn't catch on or the already-supported x509 key Why did SIM chips take off? Why did credit cards wi

• acdha 5y ago
  > Clearly, something is missing from your analysis. And yet you are unable to say what or offer relevant examples. Do you login in to websites using the key on your phone's SIM or your credit card? Both of those are amusing because they're bot not only irrelevant to the scenario in question but also something people use because that's what they were given, not something they sought out.
• iggldiggl 5y ago
  The private key there is only an implementation detail, though. The reason people don't care about it is because in the case of a SIM card you can get a replacement SIM while keeping the same phone number (which is what people really care about), and in the case of a credit card where a premature replacement might involve a change of credit card number - for one-off payments it doesn't matter anyway, you just start using the new card and that's it - and for recurring payments all businesses already need to allow for updating your credit card details because credit cards regularly expire anyway, so having to possibly manually update all your recurring payments might be a bit tedious and annoying, but it's certainly no impossible, out-of-the-ordinary task