I think we have 2FA sorted nicely on our accounts pages for A&A.
We have taken on board some constructive comments, and done things like "you can't set paranoid mode until you have confirmed that the app has been installed and used a code", and also not showing the QR code or seed again, once installed.
The trick to both of these was to use a different seed for codes sent by SMS than codes from the authenticator - that way we can tell if the authenticator has in fact been used and not just an SMS'd code. Obviously we did have to allow for the remote chance of code matching both seeds and ask for a new code in such cases.
I event made a video showing how to set it up!
The next step is 2FA on our control pages. But first it is worth explaining - yes, I know that really what you should do is identify a specific living individual in some way, and separately have associations of accounts or logins that they are allowed to access in various ways. The system we have does not do that, I know - we have the accounts logins and the control pages logins. The system we have also has a complex set of linkages such as dealer logins on control pages, and, of course, staff logins. Changing to a "single sign on" is a good idea, but a big step we'll tackle another day.
The plan is to use the same library and tools, and almost identical set up processes, as the accounts 2FA system. Indeed, some of the pages/scripts will simply be copied and amended for the different database structures in use on the control pages.
There is, however, one extra trick we can do, and it will be an extra button. As we have the "seed" for the 2FA on the accounts, we can simply have an option to "Copy 2FA from account" for an associated control pages login - why not? Obviously we will ask for password and a new code at the time to confirm you have the authenticator, and there is no reason to show a QR code when doing this. But this would reduce the number of authenticator entries you need installed and will be ideal for cases where it is one person handling accounts and technical issues - like most of our home customers.
This would just be an option though - customers can have separate control for accounts and technical, and have separate people and hence separate authenticators for the control pages if they want.
I hope that sounds sensible. However, I do plan to "let the dust settle" a bit, and see how the accounts 2FA works out before working on the 2FA on the control pages. Feedback welcome, as always.
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