Any integration done well enough is sufficiently close to magic. With apologies to Isaac Asimov.

Some background for the uninvited Two Factor Authentication (2FA) and it’s more serious cousing Multi-Factor Authentication (MFA) is a way of protecting your access in more than one way. In the traditional world, it means that only you have access to your credit card and its four digit PIN, only you know which bicycle or home is yours and carry the key to the lock, that only you carry your ID or password and look sufficiently like the person on the photo1.