Sorry I wasn't exactly clear.
I don't require to see a copy of their ID, but I do require that they provide their ID to airbnb and that their picture matches their person.
Else I will ask to see ID at the door.
These guests don't want to verify their ID with Airbnb.com.
Good for them, I just will not accept them.
I tend to think that it is a good scam for people who want to do damage and not be held responsible.
I don't even think these people are Danish.
It is the perfect recipe for a scam.
After all, I do desire Danish guests, they are very nice. And being of an unknown culture, I can imbue them with strange thought processes and weird government policies. I.E., the EU is punishing Google for privacy issues, so it is possible that Denmark's government could warn their citizens about sending ID through the interwebs.