smart_liveliness_detection library

Classes

BackgroundGlowPainter
Background glow that moves and pulses with active item
BiometricMatcher
Compares two BiometricTemplates and returns a similarity score.
BiometricTemplate
A compact, privacy-preserving biometric template derived from a liveness session. Contains a feature vector that represents the geometric structure of the detected face — it cannot be reversed into a face image.
Challenge
Represents a liveness detection challenge that the user must complete
ChallengeHintConfig
ChronosPainter
CosmosPainter
DepthDetectionConfig
Configuration for the 3D depth detection anti-spoofing feature (iOS only).
DepthDetectionResult
Result from a single ARKit depth analysis frame.
FaceQualityResult
Result of a face quality analysis.
FloatingPainter
FuturisticAmbientGlow
An ambient glow layer that can sit behind the camera preview, reacting to which challenge is currently active.
FuturisticBarPreview
A standalone preview-only bar — no Provider needed.
FuturisticLivenessBar
An animated challenge-progress bar driven by a LivenessController from the ambient Provider context.
FuturisticOvalOverlay
A full-screen overlay that draws a futuristic HUD-style oval face frame driven by the active LivenessUiStyle.
FuturisticTheme
Theme configuration for futuristic painter effects used in liveness UI.
HologramPainter
KineticPainter
LiquidMetalPainter
The main liquid metal container with complex deformation
LivenessConfig
Configuration class for customizing the Face Liveness Detection package
LivenessConstants
LivenessController
Controller for liveness detection session
LivenessDetectionScreen
Main widget for liveness detection
LivenessDetectionView
View component of the liveness detection screen
LivenessMessages
A class to hold customizable messages for the liveness detection UI.
LivenessSession
Represents a liveness detection session
LivenessStylePicker
A bottom-sheet widget that lets users choose a LivenessUiStyle.
LivenessTheme
Theme configuration for the Face Liveness Detection package
MonolithPainter
ObsidianPainter
PrismPainter
QuantumPainter
ScreenFlashConfig
Configuration for the Screen Flash anti-spoofing test.
ScreenFlashResult
Result of the screen-flash anti-spoofing test.
SingularityPainter
SumiPainter
SynapsePainter
TemplateConfig
Configuration for biometric template generation.
Vec2
VoiceGuidanceConfig
Configuration for the voice guidance / text-to-speech feature.

Enums

BiometricAlgorithm
Algorithm used to produce the biometric feature vector.
ChallengeHintAnimation
Entrance/exit animation style for the challenge hint widget.
ChallengeHintPosition
ChallengeHintStyle
Visual container style for the challenge hint GIF guide.
ChallengeType
LivenessState
LivenessUiStyle
Selects which futuristic painter is used for the liveness progress bar.

Functions

buildStylePainter({required LivenessUiStyle style, required int count, required double animationValue, required double idleTime, required double pressValue, FuturisticTheme? themeOverride, Map<String, Color> customColors = const {}, Map<String, bool> effectToggles = const {}}) → CustomPainter
Builds the correct CustomPainter for a given LivenessUiStyle.
lerpDouble(double a, double b, double t) → double

Typedefs

BiometricTemplateCallback = void Function(BiometricTemplate template)
ChallengeCompletedCallback = void Function(ChallengeType challengeType)
FaceDetectedCallback = void Function(ChallengeType challengeType, bool firstChallengePassed, CameraImage image, List<Face> faces, CameraDescription camera)
FaceNotDetectedCallback = void Function(ChallengeType challengeType, LivenessController controller)
FaceQualityCallback = void Function(FaceQualityResult result)
FinalImageCapturedCallback = void Function(String sessionId, XFile imageFile, Map<String, dynamic> metadata)
LivenessCompletedCallback = void Function(String sessionId, bool isSuccessful, Map<String, dynamic>? metadata)