• Kiosk Implementation: Implement and refine Android Lock Task Mode (Screen Pinning) to prevent users from exiting the application or accessing the OS settings. • System Hardening: Disable or hide system UI elements (Status Bar, Navigation Bar, Notification Shade) programmatically to ensure a fully immersive experience. • Watchdog & Resilience: Implement self-healing mechanisms, such as WorkManager tasks and AlarmManager watchdogs, to automatically restart the app or services in case of crashes or ANRs. • Boot & Update Management: Optimize the BootReceiver logic for instant startup and manage robust OTA (Over-the-Air) update flows. • Security: Secure local data using EncryptedSharedPreferences and Android Keystore. Hardening communication channels (MQTT/TLS) and preventing ADB abuse in production. • Peripheral Integration: Optimization of hardware drivers/SDKs (Biometrics, Card Readers) to prevent resource leaks and ensure stability over long uptimes. • Logs & Diagnostics: Implement robust audit logging (local & remote) to trace issues on devices deployed in the field.