'Trapwire' Going Mainstream

Though not really in the USA, yet.  Here's a report in The Guardian today by their tech editor. 'It sounds like something from the film Minority Report: a CCTV surveillance system that recognises people from their face or walk and analyses whether they might be about to commit a terrorist or criminal act. But Trapwire is real and, according to documents released online by WikiLeaks last week, is being used in a number of countries to try to monitor people and threats."