Can laser shoes help people with Parkinson's walk?

Many people with Parkinson's disease have freezing episodes when they walk. They suddenly come to a standstill and even though they want to move, they can't.

One London-based entrepreneur has come up with a solution - lasers fitted to their shoes.

Filmed by Richard Kenny and edited by Ammar Ebrahim for BBC World Hacks. Like, Share, Engage.

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