There's no weird guessing whether someone is really recording at the moment, no lengthy observation or excuses or negotiated results, it's a clear requirement with an immediate action.

P.S.: Come to think of it, masking requirements are similar: It doesn't matter if you "feel fine" or "it's just the sniffles" or "hayfever", you visibly wear a respiratory mask in this place, period. Too many people have abused that trust before and it's difficult/impossible to determine personalized exceptions.

> People violating the rule will be "politely asked to stop", says Abbott. "If you are seen doing it again, you will be asked to leave the venue."

I'm past my clubbing days but can attest to seeing this in practice at a couple venues. Someone started filming one of their friends and both got promptly escorted to the door.

It doesn't stop people from doing it deliberately but it prevents the discussion between people holding up a phone and someone else thinking they're being filmed. If someone does that without the sticker it is immediately cause for calling security.