Voting in the people's choice section of the 2016 Westpac Innovation Challenge closes on Tuesday, with five healthcare start-ups vying for the top prize including the team behind the GP2U telehealth service with its new SkinView concept.

GP2U founder James Freeman and CEO Sam Holt have worked together to create SkinView, which they describe as a patented, disposable device that turns any smartphone into a digital dermatoscope and microscope.