Coinbase provides several options for generating 2-step verification codes (AKA 2-factor or multi-factor authentication) with various levels of setup.
Security keys are the most secure method for 2FA. For more information:
Duo and Google Authenticator provide a very secure configuration for 2-step verification. These do not require phone reception or internet access once they're set up. Learn how to set up a TOTP authenticator.
If you verify a phone number via text message without installing any TOTP authentication apps, you will automatically receive 2FA codes via SMS text message.
It is not possible to receive 2FA codes delivered to a landline phone number by voice call. For security purposes, Coinbase does not support the delivery of 2-factor authentication (2FA) codes via voice call. If you have a landline registered with your Coinbase account, follow these steps to upgrade your security:
1. Sign in to the Coinbase website with your username and password.
2. Click I need help > I need to update my phone number.
3. Complete the Account Recovery process by following the steps listed.
To increase your security, enable an authenticator.
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