How do programs with 2fa enabled keep track of the 2fa code, since it changes in a short time span and there’s many different ways / apps to generate said code?
In: Technology
The programs have a set of numbers called a “seed” that arr specific to a certain account. You can take that seed then and run it through an algorithm that will give you a set of alphanumeric characters that can be displayed and changed every so often and because both devices have the same seed they will get the same result once the calculation has been run. As a result you can enter the number to the website or program and it basically tells them that yes, I have control because I have access to the only other copy of the seed matching this account.
This is the basic simple explanation as I’m sure someone could better or deeper explain it than I can.
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