App Usage
How you interact with apps tells companies a great deal:
Which apps you open and how often
Time spent on each app
Features accessed (e.g., filters in Instagram)
In-app purchases
Behavioral sequences (what you do after opening an app)
This data is valuable not just to developers for user experience improvement, but also to advertisers and data brokers for behavioral profiling.
Modern smartphones are packed with sensors:
Accelerometer (detects movement and orientation)
Gyroscope (measures rotation)
Magnetometer (compass functionality)
Ambient light sensor
Proximity sensor
Microphone and camera
These sensors feed apps with real-time vietnam phone number list environmental and physical data. For instance, fitness apps use accelerometers to count steps, but malicious SDKs can use gyroscopes and microphones to eavesdrop passively.
4. Location Data
Location data is among the most valuable and sensitive:
GPS coordinates (real-time and historical)
Wi-Fi and Bluetooth signals
Cell tower triangulation
Apps like Google Maps use this data for navigation, but countless others use it for targeted advertising, location-based recommendations, and profiling. Location can also imply routines—where you live, work, shop, worship, and who you meet.