When you log in and set up for MetaMask, in the setting and privacy you might notice that there is no MetaMask 2FA. Sometimes users ask us, "When are there two factors?". Two-factor authentication is a great feature you can expect from any website using traditional authentication, but it's a bit more complicated for self-custody (or non-custodial) crypto wallets like MetaMask.
Why there is no Metamask 2FA?
Usually when people say "two-factor authentication" they are referring to a centralized server-type account like they are used to with web2. This is the mode where you have an authenticator app and you have to enter some extra characters when logging in.
Two-factor authentication (2fa) does not work with MetaMask because MetaMask is unmanaged. This means that only you have access to your secret recovery phrases (controlling your assets) and they are not stored in a centralized server.
Since Metamask does not keep your private key on the servers they maintain, or at all, they cannot limit when you can make transactions. It also means they can't vet you or prevent you from using your funds, but it can be more of a liability than you're used to comparing to traditional login systems.
For best security:
- Never Share Your Secret Recovery Phrase
- Using a hardware wallet
- Trade with a clean computer to avoid keyloggers and malware.
- Don't give DApps too many permissions.
Now I believe you know about Metamask 2FA and why it doesn't have. Your assets don't exist in a blockchain wallet, they exist in the blockchain. A wallet is just an interface to access and manage accounts.
