You can get secret code and import it into any 2FA app. It works universally.

Authentication: Types, Risks/ Attacks, Advice. The clarification from o_e_l_e_o is perfect.

Quote from: o_e_l_e_o on October 31, 2020, 03:05:50 PM

Quote from: masulum on October 31, 2020, 12:29:34 PM

if most of service currently just have Google 2FA on their services?. So far, I'm just seeing it on service i use no other 2FA options except SMS/email verification.

I'm not entirely sure what you mean here, perhaps because I do not use any Google products so I'm not aware of what their 2FA options are. If a site such as a crypto exchange says "Scan this code with your Google Authenticator App", then you should be able to use any 2FA app. I have certainly done this in the past and it works fine.

If the service only offers SMS or email verification for 2FA, then you obviously can't use an app - you can only use what the site offers. Both of these are not great choices, but you can make it slightly better by using a different email address with a different password to the one you use to log in to the account, or by using a burner phone with a number you do not use for anything else and which you never use to access the services in question.

You can choose open source 2FA apps to use.

Quote from: o_e_l_e_o on June 27, 2020, 01:39:10 PM

Most of these are not open source and do not allow proper encrypted back ups. Google Authenticator in particular is awful from the regard. FreeOTP is no longer in development. Here are the apps you should be using:
Android - Aegis or AndOTP
iOS - Tofu or Authenticator