Behavioral Biometrics

Analyze touch and typing patterns on mobile.

Enabling Biometrics

final simplr = SimplrFraud(
  config: SimplrFraudConfig(
    collectBiometrics: true,
    autoStart: true,
  ),
);

Touch Tracking

Track touch patterns during form input:

// In your widget build method
return GestureDetector(
  onTapDown: (details) => simplr.onPointerDown(details.globalPosition),
  onTapUp: (details) => simplr.onPointerUp(details.globalPosition),
  child: YourForm(),
);

Or use SimplrForm widget:

SimplrForm(
  tracker: simplr,
  child: Column(
    children: [
      SimplrTextField(...),
      SimplrTextField(...),
    ],
  ),
)

Keystroke Tracking

Track typing patterns:

SimplrTextField(
  tracker: simplr,
  fieldName: 'email',
  controller: _emailController,
)

The widget automatically tracks:

• Time between keystrokes
• Key hold duration
• Typing speed
• Correction rate

Collecting Signals

final behavior = simplr.collectBehaviorSignals();

print(behavior.keystroke.typingSpeed);   // chars/second
print(behavior.touch.avgPressure);       // 0-1
print(behavior.formFillTimeMs);          // milliseconds

Behavior Signal Fields

Keystroke Metrics

Field	Type	Description
avg_delay	double	ms between keys
typing_speed	double	chars/second
correction_rate	double	backspace ratio
keystroke_count	int	total keystrokes

Touch Metrics

Field	Type	Description
avg_pressure	double	0-1 pressure
avg_radius	double	touch size
swipe_velocity	double	swipe speed
touch_count	int	total touches