A US Congress plan to make consumer electronics companies put copyright chips in their products has been criticised by civil liberties campaigners.
Legislation introduced by senator Ernest Hollings requires companies to add a 'copyright chip' to their products that would enforce a government-approved encryption scheme, according to the Associated Press (AP).
Recorders such as TiVo and digital music players like the Apple iPod - and newer DVD and CD formats already on the market - feature built-in copy-protection.
But civil liberties campaigners have expressed concerns that if companies are compelled to add copy-protection into consumer devices, the restrictions will stifle innovation and damage the economy.
A Warner Bros. spokesman was quoted by AP as saying the proposed restrictions aimed not at blocking consumer uses of music and video, but to prevent pirates from distributing it.
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