Smartphone pedometers underestimate steps, still valuable

Various media outlets reported on a UBC study that found iPhone owners who use the Health app to track their steps could be doing more than what the device indicates.

“At lower speeds, [the iPhones] were less accurate, missing about nine to ten per cent of steps,” said Mark Duncan, a PhD candidate at UBC’s school of kinesiology and study lead author.

A Canadian Press story appeared on CTV and National Post and a similar story appeared on CBC (also Yahoo).