On WatchOS 3 and Wheelchair Users

John Brownlee for Fast Company, "How Apple Made The Watch Work For Wheelchair Users":

In the end, Apple collected more than 3,500 hours of data from more than 700 wheelchair users across all walks of life, from regular athletes to the chronically sedentary, in their natural environments: whether track or trail, carpet or asphalt. From this data, they learned how to adjust watchOS 3's algorithms to track wheelchair users.

A fantastic piece on an incredibly thoughtful and important feature.