adding: they call it "backup codes" built into android phones even with 2FA turned off https://support.google.com/accounts/answer/1187538 https://support.googl

adding: they call it "backup codes" built into android phones even with 2FA turned off https://support.google.com/accounts/answer/1187538 https://support.google.com/accounts/answer/1187538 My old android phone had some kind of hidden code generation tool for Google that worked even when it was offline without a working sim. Never seen that before or can figure how it works. Must have been some pre-shared encryption before it went offline. I think it was buried under one of the "try another way" options and they walk you through it with instructions. (I do NOT have 2FA turned on)