I went to a comedy show recently that wouldn’t allow phones in. It was a huge show with thousands of people. The way they did it was with a special sleeve that

I went to a comedy show recently that wouldn’t allow phones in. It was a huge show with thousands of people. The way they did it was with a special sleeve that you would lock your phone in. You had your phone, you just could access it. At the end of the show, they used a strong magnet to unlock your phone.