Alanna Smith: facial recognition to track turtles

A project led by Cook Islands environmentalist Alanna Smith, is taking advantage of an anatomical quirk to track turtles' movements around her home country of Rarotonga. The director of NGO Ipukarea Society is utilising AI facial recognition software to identify turtles by their facial patterns - which are unique, like fingerprints. She joins Susie Ferguson to talk about this citizen science project, which has been running for a year.