We have the CPR (Central Person Registry)-number in Denmark which is handed over to various authorities and can also be misused for fraud, to which degree I'm unsure of- but I have heard of some nasty debt issues people struggled to get out of. What's worse is that the generating algorithm is based off of your date of birth and if you have date of birth for the victim you can run the algorithm rather easily and come up with 10-20 potential CPR-numbers (I can't remember the exact num., but it's approximately in that range) whereas one is the valid for the person you wish to defraud.
EDIT: Unsure about possible CPR candidates when reversing CPR numbers.. There have been some updates to the way it's working post 2007.
EDIT: Unsure about possible CPR candidates when reversing CPR numbers.. There have been some updates to the way it's working post 2007.