2-Factor Authentication besides just phone?

So, when I came back to League I found out they added the 2FA protection. I really like this! It helps secure your account and make everything feel a lot more safe..But at the same time, it'd be a lot better in my opinion to offer the option to have a third-party authentication app on your account. That's a lot safer than the phone one as I've heard stories of phone routing and the such, so if possible could we see about getting this soon? Thank you!