Has anyone had the experience of having their passport photographed at check-in at Greek hotels? This has happened to me twice at different hotels. I travel often to Greece and this practice was never done before. Apparently, this is done for the purpose of paying the "tourist tax". I have nothing against the tax, but leaving a picture of my travel document in some clerk's phone is a gross infringement of privacy and has tremendous potential for misuse.
Does anyone have any advice on how legal this is in Greece and what to do about it?