5. Integrating Third-Party Fitness Trackers and Data Using the Fitbit API

One would be remiss to discuss health sensors without mentioning the most popular connected motion tracker on the market, the Fitbit. Through its web-based API (application programming interface), Fitbit allows developers to access activity logged from its hardware, as well as related health information from Fitbit’s ecosystem, including meals and weight. This chapter will teach developers how to connect to the API from within their apps, as well as how to retrieve information from it and log new activities.