Exclusive: Oxevision system used by 40% of NHS mental health trusts being scrutinised by information commissioner over privacy concerns Exclusive: Oxevision system used by 40% of NHS mental health trusts being scrutinised by information commissioner over privacy concerns The information commissioner has launched an investigation into a controversial camera-based system for monitoring patients in their bedrooms, used by 40% of NHS mental health trusts, over data protection concerns. Oxevision is