Enum BiometricKind 

#[repr(C)]
pub enum BiometricKind {
    NotAvailable = 0,
    Fingerprint = 1,
    Face = 2,
    Iris = 3,
}

What biometric hardware the device can authenticate with right now.

This is the sync availability probe (iOS LAContext.biometryType / canEvaluatePolicy; Android BiometricManager.canAuthenticate), not the outcome of an auth attempt — that is BiometricResult. NotAvailable covers “no sensor”, “not enrolled”, and “disabled by policy” alike; callers that need to distinguish those use the richer per-attempt BiometricResult variants.

Variants

NotAvailable = 0

No usable biometric sensor (absent, unenrolled, or disabled).

Fingerprint = 1

Fingerprint reader (Touch ID, Android fingerprint, Windows Hello fingerprint).

Face = 2

Face recognition (Face ID, Android face unlock, Windows Hello face).

Iris = 3

Iris scanner (Samsung legacy, some Android OEMs).

Implementations

impl BiometricKind

pub const fn is_available(&self) -> bool

true for any real sensor — i.e. anything except NotAvailable. Lets the demo gate decide whether to even offer a biometric unlock.

Trait Implementations

impl Clone for BiometricKind

fn clone(&self) -> BiometricKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BiometricKind

impl Debug for BiometricKind

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

Formats the value using the given formatter.

impl Default for BiometricKind

fn default() -> BiometricKind

Returns the “default value” for a type.

impl Eq for BiometricKind

impl Hash for BiometricKind

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

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 BiometricKind

fn cmp(&self, other: &BiometricKind) -> 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 BiometricKind

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for BiometricKind

fn partial_cmp(&self, other: &BiometricKind) -> 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 StructuralPartialEq for BiometricKind