I had some random folks in hostel reception taking full photo with their private smartphone of my id document "for the police", despite I clearly said I do not consent to have a copy of my document taken. Spanish hosts are absolutely shady and sloppy privacy wise.
EDIT. Spaniards don't take it personally. There is a war at the EU borders and there are waves of scams and various predatory behaviours, plus usual organised scams from Balkans, China, and India. Visitors will not be happy about their documents being scanned.