How do I enable Two-Factor Authentication (2FA)?To strengthen your security, we recommend you make use of 2 Factor Authentication or 2FA. You can activate this in your Coinmerce security settings. Please store the secret key you will see somewhere safe. We have deliberately chosen to only support 2FA through the mobile applications Authy and Google Authenticator and not also SMS. This because 2FA through SMS is vulnerable to so called SIM swapping.