Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mean relative error in terms of speed for each position (each pedometer is represented by a different shade, from the brightest to the darkest: iHealth activity monitor, Withings Pulse O2, Misfit Shine, Garmin vivofit). The largest black bar represents the average for all pedometers.
