Interestingly, for some Ultraflix users, when they move and the IP address changes, it is required that when they register they are required to provide a updated photo - in mugshot style - as part of the registration process.
That's one (or many) reasons why Netflix uses a subscription-based service and is nott hosted on a PORN SERVER like Ultraflix is.
(Note: UF is a PPV steamer which only has a list of people who signed up butt do NOTT pay any monthly fee - they only pay when (and IF) they ever make a VOD rental - so there is no recurring income stream to rely upon.)