This module collects and analyzes the following touch and key -based biometric metrics from user interactions while collecting BATTERY metrics aswell

• Finger Pressure:

  • Units: Pascals (if hardware supported) or simulated units.
  • Description: Indicates the force applied by the finger on the screen.
  • Calculated by: event.pressure the pressureChangeMagnitude * pressureChangeDirection

• Hold Time:

  • Units: Seconds (s) or milliseconds (s).
  • Description: The duration of a continuous touch interaction.
  • Calculated by: measuring the time difference between touch-down and touch-up events

• Finger Blocked Area:

  • Units: Pixels or related screen-density-independent unit.
  • Description: Approximate area of finger contact with the screen.
  • Calculated by: event.getSize()

• Finger Orientation:

  • Units: Degrees (°).
  • Description: Angle of finger movement during gestures (e.g., swipes).
  • Calculated by: event.historySize i.e., event.getHistoricalX and event.getHistoricalY

Metric: Flight Time

• Units: Milliseconds (ms) or seconds (s)
• Description: The time duration between a finger leaving the screen (touch-up event) and subsequently touching down again (touch-down event).
• Calculation: Subtract the timestamp of a touch-down event from the timestamp of the previous touch-up event.

Key Hold Time:
* Units: Seconds (s) or milliseconds. * Description: The duration of a continuous touch interaction. * Calculated by: measuring the time difference between touch-down and touch-up events

• Context Matters: Analyze flight time in conjunction with other metrics. A short flight time alone doesn't provide definitive insights.

Note, that key events do not return key pressure and finger area since this is done by the motion event for touch

• Battery Current:

  • Units: Amperes (A)
  • Description: The instantaneous rate of flow of electric charge within the device's battery. Positive values usually indicate charging, and negative values indicate discharging.
  • Source: Android BatteryManager

• Battery Voltage:

  • Units: Volts (V)
  • Description: The electrical potential difference between the battery's positive and negative terminals.
  • Source: Android BatteryManager

Important Considerations

• Rapid Fluctuations: Battery current, in particular, can fluctuate based on the device's activity even over short periods.

• Contextual Analysis: These metrics are most meaningful when analyzed in conjunction with other usage data

Important Considerations

• Hardware Limitations: The accuracy and availability of certain metrics (especially pressure) may depend on the device's hardware capabilities.
• Data Privacy: Users are prompted by anadroid to send permit the app to run in the fore ground