The technology uses video cameras to see things that we can’t see with our eye, the CEO tells the Knoxville News Sentinel.

Hay invented the technology 10 years ago while at the University of Louisville. He left in 2013 to start RDI Technologies to bring the technology into commercial markets.

By pointing a digital camera in the direction of the subject, RDI Technologies uses every pixel as an optical sensor capable of measuring motion or vibration without requiring direct contact.

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