The capability for an application to present its interface above all other visible applications is a system-level function. This allows certain applications to maintain a persistent presence, ensuring immediate user access regardless of the user’s current activity. Common examples include chat heads, floating widgets, and notification overlays that remain visible while other apps are in use.
This functionality provides enhanced multitasking capabilities and accessibility. Users can interact with the overlying application without needing to switch contexts, improving workflow efficiency. Historically, such features have evolved from simple system alerts to complex application interfaces that seamlessly integrate with the user’s primary tasks. This elevated presence can also serve critical functions like emergency alerts or assistive technology interfaces, emphasizing the importance of controlled and secure implementation.
