Almost all modern devices come with a camera these days. Laptops and tablets come with webcams and 2-in-1s like Surface come with dual cameras. Windows 10 ships with a Camera app for all essential functionality related to capturing video or pictures. Skype calls, various online services, Win32 apps and Universal apps can access your camera. From a privacy point of view, it is a good idea to control which of your installed apps have access to the camera and revoke permissions if that app does not really need camera access for its core function. Here is how it can be done.