Police have been meeting with door staff in Brighton to help them spot vulnerable night-clubbers they say could be at risk.
Over the last year more than 350 rapes and sexual assaults were reported, many of which have been attributed to the city's booming night-time economy.
Andy Dickenson's report contains clips of the Who Are You? ad campaign. He speaks to Ch Insp Katy Woolford of Sussex Police, Dave Joyce, Manager of Pryzm Nightclub, and Sussex Police and Crime Commissioner Katy Bourne.