Withings oauth2 API

The Withings API uses OAuth 2.0, an industry-standard protocol for authorization. OAuth 2.0 enables your application to access user-specific data with a secure and seamless way without requiring users to share their Withings credentials with your app. The Withings API supports the Authorization Code Flow, which is suitable for server-sideapplications. In this flow, your application will obtain an authorization code from the user, which can then be exchanged for an access token and refresh token. There are two ways to obtain the authorization code: 1. **Web Authorization Flow**: Redirect the user to the Withings authorization endpoint,where they can grant permission for your app to access their Withings data. 2. **Account Creation Flow (contract partners only)**: Obtain the authorizationcode after account creation (Cellular Devices/SDK only) . To use OAuth 2.0 with the Withings API, follow these general steps: 1. **Request user authorization/Create an account**: Use one of the two methodsmentioned above to obtain an authorization code from the user. 2. **Obtain an access token**: Exchange the authorization code for an access tokenand refresh token. 3. **Access the API**: Include the access token in your API requests to access user-specificdata from the Withings API. 4. **Refresh tokens**: Use the refresh token to obtain new access tokens when thecurrent ones expire. Please refer to the appropriate [Integration Guide](https://developer.withings.com/developer-guide/v3/withings-solutions/integration-guides)to know which method you should use.