To set up digid, you apply via official website (or app), receive one-time code in your paper mail, then proceed back to the same website/app to register your p

To set up digid, you apply via official website (or app), receive one-time code in your paper mail, then proceed back to the same website/app to register your password and phone number. App registers itself if you're using one. Once set up, you have 3 authentication methods, selectable on login page: 1) password only (low-trust authentication, not all places accept this, certainly not your doctor's office); 2) password + 2nd factor via SMS/text (high-trust); 3) password + 2nd factor via app (high-trust).