Desktop Control App with Caution Message

I'm seeking a developer to create an app for Windows and Android that takes control of a desktop and displays a caution message upon a specific user action. Key Requirements: - Cross-platform compatibility with Windows and Android. - The app should trigger a caution message when the user clicks a specific button. - The app should have the ability to take over the desktop seamlessly. Ideal Skills: - Proficiency in Windows and Android app development. - Experience with creating user-interactive applications. - Knowledge of implementing caution messages in software. Please note, the main trigger for the caution message is a user clicking a designated button. The button and the exact nature of the caution will be discussed further.