Wow!!! That's strange!! Never had a case like that. To be honest I think you have all the rights to refuse it. Ex. I have all professional profile in a binder (certifications, insurance, police check etc. Etc.) The binder stays very visual on a shelf. I always tell them to give a look if they need to at any time. I have included a copy of my drivers license.

And give them enough past client references. So, they dont have any doubt. Few times parents needed to check to write properly my name or address etc(if I'm too busy). I have a board. Where I post copies of main certificates and also they can check it out in the main page of the Ece's registry in Ontario. If I have any faults or penalties etc. Fortunately I do not have fb. (It was more things to keep it up in my view), but also I've heard parents searching on fb accounts to see who is taking care of their child etc. Reason for many teachers to keep it really hiden, disguised or have more accounts (I'm not sure it is not my thing anyway).

You can show your Id. And they can confirm for sure that you're the person that they're dealing with on the spot. You can also show your certifications ex. 1st aid cpr, police check etc. Bit don't give a copy of your Id. (It seems very suspicious ).