How Biometric wristbands could help those with severe autism

The device is worn around the wrist just like a fitness tracker - and can provide important information to carers. Credit: ITV News

A wristband which can signal when someone with autism is experiencing severe anxiety before it triggers dramatic changes in behavior is being trialled in the UK for the first time.

It looks just like a watch and works like a fitness tracker to monitor minute physiological changes in the body.

It's hoped this could transform the lives of people with acute autism - who may be non-verbal.

David is one of those using the wristbands - and his carers hope it could be a big step forward in their communication. Credit: ITV News

The device costs £1000. At the moment, the charity Autism Together has three - but would like to add five more to a trial.

Andy Bonner's been finding out more: