This week the BBC will launch its long-awaited iPlayer to allow its programmes to be downloaded online, despite the latest breach in the digital rights management system on which it is dependent. The public service corporation has taken on trust the need for a proprietary copy protection system that means the service will not be universally accessible. When the BBC Trust asked the audience an overwhelming majority said that it should be. The launch this week is likely to be overshadowed by the continuing controversy over the use by broadcasters of premium rate phone lines. When viewers pay to vote on programmes or enter competitions they rightly expect their calls to count and their entries to be included. When they download programmes they may well expect to be able to watch them where and when they want, just as they can if they record them off air. It is a question of trust.