patrons using hidden recording devices in clubs

Another site warned of a customer going around to different clubs with a hidden recording device, and described his behavior as "noticeable". The report included that it was making dancers nervous and limiting their behavior. I'd hope it's not long before all bouncers and bartenders have this guy's photo and won't even let him in the club. Has anyone ever been to a club while someone was illicitly filming dancers and customers? How did customers and club staff react?