How secure is this 2FA method and what are they called?
Go to solution Solved by Eigenvektor,
21 minutes ago, mononymous said:
1. How secure is this method?
2. What is the name of this type of authentication?
1. Reasonable secure, provided every customer has their own unique card and no one other than yourself ever had access to it and every number is only used once. However there are more modern alternatives available like TOTP.
2. My bank also used these until a year or two ago. I think they referred to it as a "TAN list". Whenever the numbers on the list were used up, I would get a new one. These days they require the use of a mobile app that will show the transaction I'm about to do and requires me to confirm it. The app requires a separate sign-in beforehand.
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