I'm a first-time traveler to Italy. I made a reservation for an apartment for a two-night stay in Milan through booking.com. The communication I've had with the host has been good. Several days before the upcoming reservation, I received the following request, sent through the booking.com app.
"As soon as you enter the apartment, you must submit via WhatsApp the photos of the identification documents (identity card or passport) of all the people staying inside the structure. It is absolutely mandatory by law in Italy and cannot be refused at the behest of the Police."
Google tells me the request is legit, However, I am concerned about the method of transmission, i.e. through Whatsapp. How can I protect myself from identity theft in this situation?