CCTVs are taking a step closer to the science fiction idea of the Minority Report with a predictive system being installed in a British city for the first time.

The CCTV system has gone up in sites across Portsmouth and it will reportedly help predict crimes before they actually happen.

The city's council has set up the network of "intelligent" cameras that can alert an operator to suspicious behaviour.

The system is able to spot "unusual" incidents like somebody loitering or a vehicle travelling too fast.

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It then alerts CCTV operators so they in turn can assess the situation and decide what action - if any - needs to be taken.

The system is being set up to watch quiet areas like car parks, stairwells or corridors in buildings and streets at night-time.

This is to allow an operator to monitor more cameras without having to watch each screen simultaneously.

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