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Can big data help predict crime?

The police and intelligence services are turning to "big data" to identify patterns that could help them not only solve crimes but predict them too, as Newsnight's Susan Watts reports.

We create trillions of bytes of data every day - from digital pictures and videos, to purchase transaction records, and mobile phone GPS signals.

The police and intelligence services are turning to this "big data" to identify patterns that could help them solve crimes, and some experts believe big data might be able to help predict crime too, as Newsnight's Susan Watts discovers.