Slight thread drift.
"Sir Peter Maxwell Davies has called for a fine to be imposed on audience members whose mobile phones ring during concerts.

His comments follow a concert at the St Magnus Festival, which he runs on the Orkneys, in which at least three mobile phones rang.

The Master of the Queen's Music described audience members who use mobile phones as "artistic terrorists". He plans to write to mobile phone companies to enquire about the viability of fines, which he suggests should go to the Musicians' Benevolent Fund.

Technology exists to block mobile phone signals from concert halls by lining them with a conductive material to form a Faraday shield. However, the use of such a shield is against the law in the UK as a result of the Wireless Telegraphy Act 2006"