This system permission enables an application to display windows above other applications. For instance, a floating widget, a heads-up notification, or a custom drawing application overlay utilizes this function. The permission is requested during app installation or runtime, contingent upon the Android version, and user consent is required for granting it.
The capability to draw over other apps allows for enhancing usability and creating novel interactive experiences. Quick access tools, screen recorders, and accessibility features leverage this ability. However, potential misuse exists, where malicious applications could create deceptive overlays to steal user credentials or disrupt device functionality. Historically, Android versions managed this permission differently, with newer versions implementing stricter controls and user awareness measures to mitigate security risks.