The cells at Exeter Police Station Devon and Cornwall Police has become the first force in the world to install high-tech cameras in custody cells that monitor a detainee’s movement, pulse and breathing. The ground-breaking technology called Oxevision has been developed by a company called Oxehealth, a spin-off company formed from a partnership between Oxford University’s Institute of Biomedical Engineering and Oxford University Hospitals NHS Trust. The cameras allow detainees to be monitored remotely, and can alert to potentially risky activity such as self-harm or significant health issues allowing for early intervention. The system can see ‘micro blushes’ that accompany heart beats, which the human eye cannot detect. It counts these micro blushes to calculate a pulse rate on a small area of visible skin.