Madonna is playing at the Palladium Theatre in London for 14 nights.

The audience has to lock away their devices in special fabric cases as they enter.

This means they can carry the phones but not use them until after the show when they swipe the case to deactivate the magnetic lock on their way out.

The system is called Yondr. How does it work? Upon arrival at the venue, all phones and smart watches are placed in Yondr cases by our staff and will be unlocked at the end of the show. Guests maintain possession of their phones at all times. Guests may access their phones in the designated Phone Use Areas throughout the venue at any time.

Looking at where the theatre etiquette is going, could Yondr be a possible solution? What do you think?