.. Benedict Cumberbatch tells enthusiastic fans that he can detect a red shiny light in the blackness of the auditorium from a distance and says, quite apologetically, that if he sees that shiny red light in the auditorium, the responsible parties will in fact have to be evicted... but tweeting, and paraphenilia outstanding are welcome during the performance of Hamlet... here's the URL to the youtube video in question .. to be or not to be a shiny red light in the middle of the audience...

https://youtu.be/9e-ud9zhVuc?t=2