Everyone who buys a mobile telephone will be forced to register their identity on a national database under government plans to extend massively the powers of state surveillance. Phone buyers would have to present a passport or other official form of identification at the point of purchase. Privacy campaigners fear it marks the latest government move to create a surveillance society. A compulsory national register for the owners of all 72m mobile phones in Britain would be part of a much bigger database. Whitehall officials have raised the idea of a register containing the names and addresses of everyone who buys a phone in recent talks with Vodafone and other telephone companies, insiders say. The move is targeted at monitoring the owners of Britain's estimated 40m prepaid mobile phones. They can be purchased with cash by customers who do not wish to give their names, addresses or credit card details. The pay-as-you-go phones are popular with criminals ... because their anonymity shields their activities from the authorities. But they are also used by thousands of law-abiding citizens who wish to communicate in private. The move aims to close a loophole in plans being drawn up by GCHQ, the government's eavesdropping centre in Cheltenham, to create a huge database to monitor and store the internet browsing habits, e-mail and telephone records of everyone in Britain.