Since SMS 2FA is not recommended, how can I use 2FA authentication if I don't own a smartphone?
>>60811623
WinAuth works great.
This also works great (It's also open source):
https://chrome.google.com/webstore/detail/authenticator/bhghoamapcdpbohphigoooaddinpkbai?hl=en
Get a yubikey
>>60811679
WinAuth works perfectly though. It also has support for Steam trades, and other features. Just put it on your flashdrive and It's good to go.