Originally Posted by
GUWonder
If they can condition an arriving traveler’s ability to proceed on entry and are doing so on the basis of requiring presentation of documentation, then they are restricting the entry.
No, they aren't, they don't have any legal power to prevent you from entering Sweden. If they think you're not allowed to enter, your case is referred to the police which will decide whether you will be admitted or not. That decision is then made under normal Schengen rules, there are no special restrictions anymore. Of course you need to have an accepted ID, that has been the case for last ~100 years.