React Native на выставке отпечаток пальцев работает, Bt не в APK

if (await LocalAuthentication.isEnrolledAsync() && await LocalAuthentication.isEnrolledAsync()) {
  //do biometric auth
} else {
  // implement your own password or use another package for device pin.
}


//must USe Async and await to get the response from all function in expo LocalAuthentication
Singh99