https://thenextweb.com/google/2019/09/04/how-android-10-is-making-your-phone-more-private-and-secure/

Google released Android 10 last night to all Pixel phones. The update brings some nifty features like system-wide dark mode, a new gesture navigation system, and smart replies in notifications. But the release is actually focused on privacy and security upgrades; let’s take a closer look at what’s under the hood.

Prior to Android 10, you could only choose to allow individual apps to track your location all the time or never at all. Starting from this version, you can allow an app to track your location only when the app is in use. The apps will also have to ask explicitly if it needs background location access.