Facebook has released an application called Facebook Home that changes how Android phones operate by replacing the home screen and lock screen with a live News Feed. It allows messaging through Chat Heads that overlay other applications. Facebook Home will be available on a variety of Android devices through Google Play. This move shows Facebook's ambition to dominate mobile platforms as on desktop, potentially building large customer data pools. However, it may backfire by alienating users concerned about data access or prompting Google to limit Facebook's access to Android as a competitor.