Can I choose more than one trusted device? Yes if you prefer, although only one trusted device is required. Related articles What is a trusted device? Why doesn’t Qtrade use TOTP, an authenticator app, or grid authentication for 2FA? I don’t have a mobile phone to enable 2FA Do I need to use Two Factor Authentication, 2FA ? Can I have the 2FA call go to Skype, Messenger or other VOIP internet phone?