Originally Posted by
GUWonder
AirBnb has the ID of the person whose account is used for the reservations in these areas, but hosts checking does not seem to be common.
A Nagasaki airbnb saw the host jot down passport info. Of course, in Japan everyone takes a copy of foreign visitors passports by law, so there's that.
China also photocopies IDs.
OTOH, whenever I've been in South Korea, barely any attention was paid to my passport.