I suppose it could be useful, if it works, to those at particular risk of falls.
But the fact that they don't show it in action, and this extract from the blurb says it all
Wolk is still in development and the team is hoping to continue research and create a fully-functional product in 2015.
Programme on ADHD this evening
Joint fusion in foot, any experience?

. I don't think it will catch on. What do others think?