When a paedophile or rapist films their crime, professor Sue Black can track them down using nothing more than the veins, scars and other markings on their hands.
This is an amazing video. Watch and learn. We are all astonishingly different. And traceable.
But we need more help here. More technical capacity. This is an amazing appeal for help from the tech world.
Read more: http://wired.uk/1HU67n