Oscore.Maui.Biometric 1.0.1

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dotnet add package Oscore.Maui.Biometric --version 1.0.1
NuGet\Install-Package Oscore.Maui.Biometric -Version 1.0.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Oscore.Maui.Biometric" Version="1.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Oscore.Maui.Biometric --version 1.0.1
#r "nuget: Oscore.Maui.Biometric, 1.0.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Oscore.Maui.Biometric as a Cake Addin
#addin nuget:?package=Oscore.Maui.Biometric&version=1.0.1

// Install Oscore.Maui.Biometric as a Cake Tool
#tool nuget:?package=Oscore.Maui.Biometric&version=1.0.1


Nuget package CI/CD License: MIT

Provides a cross-platform implementation of biometric authentication.
Supports iOS, macOS, Android and Windows.
Continuation of the abandoned Plugin.Fingerprint in the MAUI ecosystem.


  • Add NuGet package to your project:
<PackageReference Include="Oscore.Maui.Biometric" Version="1.0.0" />
  • iOS - Add NSFaceIDUsageDescription to your Info.plist to describe the reason your app uses Face ID. (see Documentation). Otherwise the App will crash when you start a Face ID authentication on iOS 11.3+.
<string>Need your face to unlock secrets!</string>
  • Android - Request the permission in AndroidManifest.xml
<uses-permission android:name="android.permission.USE_FINGERPRINT" android:maxSdkVersion="27" />
<uses-permission android:name="android.permission.USE_BIOMETRIC" android:minSdkVersion="28" />
  • Add the following to your MauiProgram.cs CreateMauiApp method:
+   .UseBiometricAuthentication()
    .ConfigureFonts(fonts =>
        fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
        fonts.AddFont("OpenSans-Sed:nammibold.ttf", "OpenSansSemibold");
  • Use through BiometricAuthentication.Current or using IBiometricAuthentication from DI:
var result = await BiometricAuthentication.Current.AuthenticateAsync(
    new AuthenticationRequest(
        title: "Prove you have fingers!",
        reason: "Because without it you can't have access"));
if (result.Authenticated)
    // do secret stuff :)
    // not allowed to do secret stuff :(

Testing on Simulators


Controlling the sensor on the iOS Simulator

With the Hardware menu you can

  • Toggle the enrollment status
  • Trigger valid (<kbd>⌘</kbd> <kbd>⌥</kbd> <kbd>M</kbd>) and invalid (<kbd>⌘</kbd> <kbd>⌥</kbd> <kbd>N</kbd>) fingerprint sensor events


  • start the emulator (Android >= 6.0)
  • open the settings app
  • go to Security > Fingerprint, then follow the enrollment instructions
  • when it asks for touch
  • open command prompt
  • telnet <emulator-id> (adb devices prints "emulator-<emulator-id>")
  • finger touch 1
  • finger touch 1

Sending fingerprint sensor events for testing the plugin can be done with the telnet commands, too.

Note for Windows users: You have to enable telnet: Programs and Features > Add Windows Feature > Telnet Client

It was forked from the xamarin-fingerprint project.
xamarin-fingerprint is a project by Sven-Michael Stübe.
It was licensed under the MS-PL license.
This fork changes the license to MIT with attribution to the original license.

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-android34.0 is compatible.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-ios17.2 is compatible.  net8.0-maccatalyst was computed.  net8.0-maccatalyst17.2 is compatible.  net8.0-macos was computed.  net8.0-tizen8.0 is compatible.  net8.0-tvos was computed.  net8.0-windows was computed.  net8.0-windows10.0.19041 is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

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Version Downloads Last updated
1.0.1 1,190 2/23/2024
1.0.0 960 1/24/2024