Cory Doctorow: DRM is no friend of business
Many people who create and sell content put their trust in 'digital rights management' (DRM) software to protect their work from copyright theft.
But copyright activist, blogger and sci-fi author Cory Doctorow thinks content creators should steer clear of DRM.
He explains his reasoning to BBC Technology of Business reporter Fiona Graham at the Economist Big Rethink summit.