It’s all good until you get into a dependency loop with your email account passwords needing resetting, that have the email from the other account that needs resetting :P
If you think about it the last option is a way to use login via 2fa
Nah it’s just SFA with extra steps.
Magic link login with extra steps
The big brain move is going to reset your password, getting told you can’t use your current password when you type in a “new” one, then going back to the login screen to log in.
And have the password still not work.
There was one time I was traveling and had to reset one of my passwords. It sent a verification code via email but my email provider wouldn’t let me login because I was in a different country I’ve never been to before. So it was a train of recovery processes to reser my password on a single account.
I can smell the Linux crowd rushing to suggest a better method.
Run a VPN server at home, any decent router should be able to run one. Then you can be anywhere in the world and every site will still think you are at home.
