The Stanford Screenomics app is a specialized mobile research platform developed by the Screenomics Lab at Stanford University. This app is designed exclusively for enrolled participants to study the complex relationships between daily smartphone usage, media exposure, and real-time behavioral habits.

Because this study relies on granular, scientifically accurate behavioral metrics, the application requires access to system permissions. We are deeply committed to your privacy: all collected data is securely encrypted, transferred strictly over Wi-Fi connections, utilized solely for academic analysis by Stanford researchers, and never sold or shared with third-party advertisers.

Permission mapping for the 28 declared system utilities:

• Media Content Exposure (FOREGROUND_SERVICE_MEDIA_PROJECTION, android.permission.FOREGROUND_SERVICE_MEDIA_PROJECTION, android:project_media, SYSTEM_ALERT_WINDOW, android.permission.SYSTEM_ALERT_WINDOW)
Captures automated screenshots at 5-second intervals and upon screen unlock to map passive media exposure.

• App Usage Metrics (PACKAGE_USAGE_STATS, android.permission.PACKAGE_USAGE_STATS, GET_TASKS, android.permission.GET_TASKS)
Logs active application package names and screen on/off events to understand workflows.

• User Interactions (BIND_ACCESSIBILITY_SERVICE, android.permission.BIND_ACCESSIBILITY_SERVICE)
Listens for user interaction gesture events (specifically clicks, long-clicks, and scrolls) to analyze app navigation patterns.

• Physical Activity (ACTIVITY_RECOGNITION, android.permission.ACTIVITY_RECOGNITION, com.google.android.gms.permission.ACTIVITY_RECOGNITION, SENSOR_ACCELEROMETER, android.permission.SENSOR_ACCELEROMETER)
Records step counts to correlate physical activity with smartphone use.

• Geographic Context (ACCESS_FINE_LOCATION, android.permission.ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION, android.permission.ACCESS_COARSE_LOCATION)
Collects GPS coordinates to analyze how spatial mobility correlate with smartphone use patterns.

• Background Continuity (FOREGROUND_SERVICE, android.permission.FOREGROUND_SERVICE, FOREGROUND_SERVICE_DATA_SYNC, android.permission.FOREGROUND_SERVICE_DATA_SYNC, WAKE_LOCK, android.permission.WAKE_LOCK, REQUEST_IGNORE_BATTERY_OPTIMIZATIONS, android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS, RECEIVE_BOOT_COMPLETED, android.permission.RECEIVE_BOOT_COMPLETED, PREVENT_POWER_KEY, android.permission.PREVENT_POWER_KEY)
Maintains a persistent background foreground service to ensure data tracking survives system reboots and aggressive battery-saver optimization.

• Syncing & Orchestration (INTERNET, android.permission.INTERNET, ACCESS_NETWORK_STATE, android.permission.ACCESS_NETWORK_STATE, SCHEDULE_EXACT_ALARM, android.permission.SCHEDULE_EXACT_ALARM)
Schedules low-overhead connection windows to securely upload research logs to Stanford servers over Wi-Fi.

• Cache Management (READ_EXTERNAL_STORAGE, android.permission.READ_EXTERNAL_STORAGE, WRITE_EXTERNAL_STORAGE, android.permission.WRITE_EXTERNAL_STORAGE)
Provides local directory access to temporarily stage and encrypt data payloads before server syncing purges them.

• Notifications (POST_NOTIFICATIONS, android.permission.POST_NOTIFICATIONS)
Displays non-intrusive alerts to notify participants that the research study window is actively running.

• Platform Integrity (ACCESS_ADSERVICES_AD_ID, android.permission.ACCESS_ADSERVICES_AD_ID, ACCESS_ADSERVICES_ATTRIBUTION, android.permission.ACCESS_ADSERVICES_ATTRIBUTION, com.google.android.gms.permission.AD_ID, AD_ID, com.google.android.providers.gsf.permission.READ_GSERVICES, READ_GSERVICES, com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE, edu.stanford.communication.screenomics.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION)
Establishes baseline device installation targets across varying Android versions and prevents demographic data duplication across sample groups.