Create a fitness competition using AWS Lambda and Fitbit – Part 1 – Nivlesh's Blog
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Building a Token Refresh service for the Fitbit API with Azure Functions and C# | by Will Velida | Geek Culture | Medium
GitHub - Fitbit/bitgatt: The FitbitGatt API is designed to provide a strong state machine around all Android gatt operations with the aim of making Android BLE development across Android vendors as straightforward