2FA doesn’t require a smart phone. It just requires a second form of authentication.
TOTP (the one time codes that are common methods of 2FA) don’t even need a smart phone. You can store them in most password managers, if you wanted to.
With regards to other forms of MFA, you can use email, SMS, hardware keys and I’ve seen some banks use a second password (which is dumb but probably no worse than email or SMS). Some sites just ask your for “memorable information”, which is also terrible in my opinion.
It just so happens that TOTP is the best second form of authentication because it is both secure but also cheap.
If you don’t want to store those TOTP codes on your smart phone then you can store them in your password manager or buy another physical device just for 2FA. I wouldn’t normally advocate storing your 2FA codes with your passwords, but that’s still better than not having any second factor of authentication at all.
TOTP (the one time codes that are common methods of 2FA) don’t even need a smart phone. You can store them in most password managers, if you wanted to.
With regards to other forms of MFA, you can use email, SMS, hardware keys and I’ve seen some banks use a second password (which is dumb but probably no worse than email or SMS). Some sites just ask your for “memorable information”, which is also terrible in my opinion.
It just so happens that TOTP is the best second form of authentication because it is both secure but also cheap.
If you don’t want to store those TOTP codes on your smart phone then you can store them in your password manager or buy another physical device just for 2FA. I wouldn’t normally advocate storing your 2FA codes with your passwords, but that’s still better than not having any second factor of authentication at all.