Coinbase supports Google Authenticator, and also hardware keys like Yubikey. https://help.coinbase.com/en/coinbase/getting-started/verify-my-account/how-do-i-s

Coinbase supports Google Authenticator, and also hardware keys like Yubikey. https://help.coinbase.com/en/coinbase/getting-started/verify-my-account/how-do-i-set-up-2-factor-authentication https://help.coinbase.com/en/coinbase/getting-started/verify...