Enum BiometricResult 

#[repr(C)]
pub enum BiometricResult {
    Authenticated = 0,
    Failed = 1,
    Cancelled = 2,
    FellBackToPasscode = 3,
    Unavailable = 4,
    Error = 5,
}

The outcome of one request_biometric_auth attempt, delivered to the caller’s completion callback once the OS prompt resolves.

Maps onto every platform’s result enum: iOS LAError, Android BiometricPrompt.AuthenticationCallback, Windows UserConsentVerificationResult, Linux polkit / PAM (research/02 §6).

Variants

Authenticated = 0

The user matched their face / finger / iris. Unlock granted.

Failed = 1

The user presented a biometric but it did not match (wrong finger / face). Distinct from Cancelled — the prompt is still up or retries were exhausted without a deliberate cancel.

Cancelled = 2

The user dismissed the prompt (tapped Cancel / pressed back).

FellBackToPasscode = 3

Biometrics failed but the user authenticated via the OS passcode / PIN / device-credential fallback. Still a successful unlock — only delivered when BiometricPrompt::allow_device_credential was set.

Unavailable = 4

No usable biometric is enrolled / available on this device, so the prompt could not be shown (Linux degraded path, or hardware absent). Pairs with BiometricKind::NotAvailable.

Error = 5

A platform error occurred (sensor busy, lockout, key invalidated, or an unmapped native error code).

Implementations

impl BiometricResult

pub fn is_success(&self) -> bool

true when the user successfully unlocked — either by biometric match (Authenticated) or by the OS passcode fallback (FellBackToPasscode). The vault gate keys off this.

Trait Implementations

impl Clone for BiometricResult

fn clone(&self) -> BiometricResult

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BiometricResult

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Hash for BiometricResult

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for BiometricResult

fn cmp(&self, other: &BiometricResult) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for BiometricResult

fn eq(&self, other: &BiometricResult) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for BiometricResult

fn partial_cmp(&self, other: &BiometricResult) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for BiometricResult

impl Eq for BiometricResult

impl StructuralPartialEq for BiometricResult