This insole for a shoe will be able to track and log the walking/running gaits of a person, it is aimed for use in the medical field, being a cost effective solution to give doctors additional data needed for the diagnosis/treatment of ambulatory disorders, i.e. helping people to walk again.
Video of operation :-
Details of the build can be found in the 2016 hackaday.io Prize :-
What matters to me is helping a person out from the pain and suffering that leg/hip and foot problems bring, either by direct action to those already affected or indirectly as a preventative approach.
This Idea uses Piezo speakers as a means to extract information from the load that a persons foot exerts to the ground, what is different about this approach is that it is mobile and simply fits inside the persons shoe, this is in contrast to the the bulky paraphernalia that medical centres currently use.
The working mechanism leans on the premise that when you flex a piezo element it generates a voltage, so using multiple sensors multiple signals are "chooched" out when your foot flexes the transducer lined insole.