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Data captured by smartphone sensors could help criminals guess codes used to lock the gadgets, say security researchers.
By analysing data gathered by accelerometers they were able to get a good idea of the Pin or pattern used to protect a phone.
The data was useable because sensors can gather information with more freedom than apps loaded on the device.
Researchers said several different smartphone sensors could be subverted.
Smartphone Sensor Data Is A Security Risk [bbc.co.uk]