Chip and Pin machine in a shop
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How secure is Chip and Pin?

26 July 2012 Last updated at 13:54 BST

Many people use bank cards in Chip and Pin terminals every day and expect them to be secure. But, at a presentation at the Black Hat security conference in Las Vegas, UK-based researchers have demonstrated how criminals can use a card loaded with malicious software to take control of some widely used terminals.

World At One presenter Martha Kearney hears from reporter Chris Vallance how fraudsters might be able to use fake cards to potentially authorise payments or harvest PIN and card numbers.