Fig. 4.
Device components of the DeFOG system. A: Smartphone showing the step count and the three sensors with Velcro straps to attach them to the feet and chest. B: The feet sensors attached to the shoes.
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.