What about people who only have one device? Kids, elderly, people with only work computer.
I agree, it’s not a perfect system. Even if you do have multiple devices - you may be locked out if you lose your phone while traveling, can have multiple failures.
Although I don’t know what is remotely secure and is elderly friendly. Email or SMS 2FA would have been the closest in mind, but it’s not secure, and plenty of elderly struggle with both.
Pedantic types always mention that secure is only relevant in the context of a particular threat model. The elderly can use hardware authentication like those RSA devices or ubikey. Unfortunately, this is expensive, and banks don’t believe there’s demand for that. Would you switch banks for this feature?
Im not terribly familiar with the HW keys; Are you able to get multiple keys? I would worry that it would be similar to TOTP, in that if you lose/misplace/don’t have the device then you would be locked out.
And I probably wouldn’t switch banks for it, it would depend on how much more secure I perceived it and any other bank differences.