Uni student brings colour to the blind

Andrew Cowen's gran was blind and struggled to identify colours when she was looking to buy new clothes.
This prompted Andy to invent a colour detector that could be worn as a wristband, when he had to come up with an idea for a university project. RNIB Connect Radio's Allan Russell spoke to Andrew to find out how the device works and if he will manufacture more for commercial sale... @RNIBConnect