BiometricStrength enum

Biometric authentication strength level.

Only Android distinguishes these. iOS/macOS only have strong biometrics (Face ID, Touch ID, Optic ID), and Windows Hello always authenticates strongly.

Inheritance
Available extensions

Values

strong → const BiometricStrength

Class 3 biometrics only (e.g. fingerprint, or face recognition with depth sensing). Every prompt that unlocks a key requires this class.

weak → const BiometricStrength

Class 2 biometrics too (e.g. face unlock without depth sensing).

Only for simplePrompt, and the biometricAuthAvailable check before it. A Class 2 biometric can never unlock a key: signing, decryption, and the prompt createKeys shows with enforceBiometric always need a strong biometric, or the device credential where allowed. A weak check that reports canAuthenticate: true therefore doesn't mean keys can be used; check with strong for that.

Properties

hashCode → int
The hash code for this object.
no setterinherited
index → int
A numeric identifier for the enumerated value.
no setterinherited
name → String

Available on Enum, provided by the EnumName extension

The name of the enum value.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Constants

values → const List<BiometricStrength>
A constant List of the values in this enum, in order of their declaration.