They essentially work automatically without having to understand them. They get synced with your apple and google account or password manager to every device. For a work pc or something you haven't signed in with, Windows and MacOS will show a QR code you scan with your phone and it all just works.
For an old person who basically just uses an iphone and ipad, you can't screw it up and you can't be scammed.
For an old person who basically just uses an iphone and ipad, you can't screw it up and you can't be scammed.