Not what you are looking for? Ask the experts!
Two Factor Authentication requires 2 phones
Tried to set up two factor authentication for my Norton account. As a default, it wants me to install an app on my phone, which I don't want. But, after providing my phone number for the authentication, it then requires a second phone number "in case the first phone is not available", or similar reasoning.
I don't have two phone numbers, which I suspect is true for many people these days without land lines. Went on to Norton support chat for a solution, but no luck.
This seems like an unreasonable and impractical requirement in today's world.