Sensor Data
Definition: Location context inferred from raw sensor readings produced by a device.
Examples:
- Inertial sensors (IMU: accelerometer, gyroscope)
- Microphone acoustics
- Camera EXIF or image content
- LiDAR or depth sensors
Derivation method: Raw sensor traces → pattern matching or model analysis → location context.
Risks: Sensors can be noisy, biased, or deliberately spoofed (e.g., replayed images, synthetic audio).