hypnosec writes: Russia’s Speech Technology Center (STC) has come up with ‘VoiceGrid Nation’ – a system that can match an identity to voice. Operating by the name SpeechPro in the US, the company claims to have invented a technology using advanced algorithms through which law enforcement agencies can build up a huge database containing millions of voices or ‘voice prints’ of criminals, persons of interest, people on watch list, and the likes. The technology will allow government agencies to create a countrywide biometric database designed to store millions of people’s “voice-prints.” Agencies, when not sure of callers of intercepted calls, can run the recording through the ‘VoiceGrid Nation’ and find a match. The technology has already been sold to Mexico back in 2010.
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals