Delphi authentication library for Android.
uses Android KeyguardManager API
available for Delphi 10 - 10.3
source code included in registered version
royalty free distribution in applications

type
  EAuthenticationError = class(Exception)
  end;

  TAuthentication = class
    constructor Create;

    procedure ConfirmCredentials;

    property Description: string read write;
    property DeviceSecured: Boolean read;
    property KeyguardManager: JKeyguardManager read;
    property RequestCode: Integer read write default 1000;
    property Title: string read write;

    property OnSuccess: TNotifyEvent read write;
    property OnError: TNotifyEvent read write;
  end;

Only for V.I.P