[PeakShot]

Berlin does this for a completely different reason. Most of the clubs are FKK/kink/drugs zones. Having sticker on the camera stops people from taking photos of others doing the deed, making club goers more comfortable.

In berlin clubs where those things are not allowed, they generally don’t ask you to put sticker on cameras, unless they want to look cool like those places.

[omnimus]

Its not so clear cut why its done. For sure its for privacy which has higher requirements in some spaces but nowdays majority of clubs have no photos rules. Thats trend around europe not only Berlin. Even when there are no stickers there will be no photo signs and bouncer will remind everyone about this.

Imho it helps multiple issues.