You could probably buy an already existing hardware solution for OTP. There are these small things where you press a button and the display shows a seemingly random number… and they are usually authenticated against some computer system, but I wonder if there is also an option to buy an “entangled” pair that generates the same sequence of numbers.
Then there are the scams that will pretend that you lost the OTP device. For that purpose you would need a secondary solution, but that one will be legitimately required very rarely.
You could probably buy an already existing hardware solution for OTP. There are these small things where you press a button and the display shows a seemingly random number… and they are usually authenticated against some computer system, but I wonder if there is also an option to buy an “entangled” pair that generates the same sequence of numbers.
Then there are the scams that will pretend that you lost the OTP device. For that purpose you would need a secondary solution, but that one will be legitimately required very rarely.