An up to date profile picture is a requirement of Airbnb, but a person can change their profile picture to anything they want and this leaves hosts un aware of who is coming to their space. We have had many guests, with animals, objects or landscapes as their profile picture make reservations through instant book (recommended to increse booking). I have had to message these guests several times, with no response, requesting a profile picture of them. Ultiamtely, resorting to contacting airbnb to contact them to enforce their 'requirement'. As a host, I have in my house rules that it is imperative a guest has an up to date profile picture in order to book with us. This still does not help! As a host, we are already leaving ourselves vulnerable, I feel Airbnb does not enforce these safeguards for hosts.