Closed Circuit Television (CCTV) cameras are a prominent, if increasingly familiar, feature of urbanism. They symbolize the faith that spatial authorities place in technical interventions for the treatment of social problems. CCTV was principally introduced to sterilize municipalities, to govern conducts and to protect properties. Vast expenditure has been committed to these technologies without a clear sense of how precisely they influence things. CCTV cameras might appear inanimate, but "Opening the Black Box "shows them to be vital mediums within relational circulations of supervision....