There was a story not long ago about using a device in your shoes to do that: https://news.ycombinator.com/item?id=32729105 https://news.ycombinator.com/item?id

There was a story not long ago about using a device in your shoes to do that: https://news.ycombinator.com/item?id=32729105 https://news.ycombinator.com/item?id=32729105