Professor Mark Nixon has “had a few fights” with civil liberties groups in his time. As a world-leading expert in developing biometric techniques to identify people using CCTV – every anti-surveillance campaigner’s Big Bother bête noir – he knows all too well what they think of his work. “They say we’re ruining their privacy,” he says. “I don’t think their personal liberty is in danger.” The techniques he has pioneered “have been used to put murderers away – and I agree with that”.
Through the work of Prof Nixon and Dr John Carter at Southampton University, it is becoming increasingly easy for authorities to monitor us all. Research at the School of Electronics and Computer Science – funded by the Pentagon and the Ministry of Defence among others – means technology can spot and identify criminals in surveillance footage with increasing accuracy.
Now Prof Nixon’s department has received extra funding from GCHQ to form part of the national Cyber Security Centre of Excellence, with Southampton specialising in biometrics: ID-ing people using personal traits or physical characteristics. It’s a controversial area of science which Prof Nixon can claim to have helped father. One of the key aspects is gait analysis: allowing people to be identified by their body shape and the way they walk.