Say digital dictation to people and most will look confused and think vaguely of speech recognition software. But for many law firms, capturing dictation on digital files has started a quiet revolution in the way they work.

Law firms are people-hungry businesses, with layers of bureaucracy that would frighten the CEO of a standard plc. Legions of secretaries typing from audio tapes might seem archaic, but in a business that sells advice, and essentially, words, dictation is an absolute necessity. Having expensive lawyers type their own documents has never been considered cost effective.