The UK has one CCTV camera for every 14 people – and that’s just the beginning. Fingerprinting and facial recognition technologies are now found on everyday items, including our phones. This week, Tim investigates how people manage to disappear in a world where we're being recorded in increasingly advanced ways, and is joined by Clive Reedman, a leading expert in biometrics, and Renate Samson, Chief Executive of Big Brother Watch. They discuss the possibilities – and repercussions – of trying to hide in a world where cameras know your face.