On 18 July, the House of Commons select committee on science and technology published an assessment of the work of the biometrics commissioner and the forensic science regulator. My guess is that most citizens have never heard of these two public servants, which is a pity because what they do is important for the maintenance of justice and the protection of liberty and human rights. The current biometrics commissioner is Prof Paul Wiles. His role is to keep under review the retention and use by the police of biometric material. This used to be just about DNA samples and custody images, but digital technology promises to increase his workload significantly.