Why to make an account and how to keep it safe.
You can buy without an account. With one, all your orders and keys are kept in one place.
After signing up we send a confirmation link to your email. You can sign in once you have clicked it.
Two-factor authentication
Under Account, Security you can turn on two-factor authentication with an app such as Google Authenticator or Authy. Save the backup codes somewhere safe; each one works once.