If you lose your NemID code card you first cancel it online via your CPR number and your password . Then you order a new one online (identifying yourself via your passport or driving license) and it'll be shipped to the address registered with the CPR card. I have no doubt it's not bulletproof but low-level fraud seems less likely. I'd more concerned about massive irretrievable data loss.
So once you have a dodgy driving licence, as happen in the house theft case, you are half way there...
An ID card that had an online check multiple times a day would be difficult to get replaced without the owner knowing as the old would be cancelled but it would be a little intrusive.
But you'd also need to know the password (user chosen) to cancel the first one and hope that the actual owner doesn't need his or her NemID for a few days and physically break into a letter box on the correct day of delivery afterwards. Sounds a bit more than just a driving license, no?
If you lose your NemID code card you first cancel it online via your CPR number and your password . Then you order a new one online (identifying yourself via your passport or driving license) and it'll be shipped to the address registered with the CPR card. I have no doubt it's not bulletproof but low-level fraud seems less likely. I'd more concerned about massive irretrievable data loss.