Library PC bugging scam explained

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Police are investigating the discovery of snooping devices attached to public computers in two Cheshire libraries.

Staff found the keyloggers, USB devices which record keyboard activity, in the back of two PCs at Wilmslow Library and one at Handforth Library.

The devices are legal but can be used to monitor personal information such as passwords or bank card details.

The BBC's Dave Guest explained how the scam could have worked.