Berghain puts stickers on your phone cameras, it’s pretty non intrusive while substantially improving the party experience. I didn’t see a single phone in the air on the dancefloor. It was quite refreshing, felt like partying in the 2000s.
It's pretty much the norm in all "proper" German techno/electronic music clubs I've been to, Berlin and elsewhere.
I went to a show at Fabric in London during Kubecon last spring and they did the same thing. I still saw the odd person who peeled it off taking selfies or pics of friends inside but that was definitely the exception.
It's becoming more common in SF and LA too, although it's usually done by the promoter and not the venue.
This is mentioned in the article:
> More clubs have also been instituting “no phones” policies to reclaim the dance floor’s social energy. Venues including Signal, a small club that opened last year in Brooklyn’s East Williamsburg neighborhood, and recent addition Refuge, located just around the corner, cover all phone cameras with a sticker. Other larger, established venues like House of Yes and Elsewhere have also banned the use of phones inside.