When creating a build of your app, you may find that some device features (camera, etc.) are activated despite you not explicitly doing so. In most cases, these have been automatically added because a Visual Coding block using that feature has been used at some point in a script in your app. 

Please note: If you have later changed a Visual Coding Script that previously used a feature, the feature will not be removed automatically; you will need to manually remove it from your app if you do not want it active.