when a visitor have a PIN and when they access it they are directly able to see all the photos marked private, but there should be a popup to fill the details like "my photos" (Name, No./e-mail) so that admin gets to know who visited in "Gallery Visitors" Section with PIN and can control to approve/reject those visitors in separate section. otherwise whoever have a PIN (shared by a Groom/Bride) admin will never get to know who visited private gallery.