diff --git a/SmileLock-Example/SmileLock-Example/BlurPasswordLoginViewController.swift b/SmileLock-Example/SmileLock-Example/BlurPasswordLoginViewController.swift
index 17fc580..b4b15bc 100644
--- a/SmileLock-Example/SmileLock-Example/BlurPasswordLoginViewController.swift
+++ b/SmileLock-Example/SmileLock-Example/BlurPasswordLoginViewController.swift
@@ -41,4 +41,11 @@ class BlurPasswordLoginViewController: UIViewController {
 //             inputView.labelFont = UIFont(name: "Chalkduster", size: 29)
 //        }
     }
+    
+//    override func viewDidAppear(_ animated: Bool) {
+//        super.viewDidAppear(animated)
+//
+//        // manually initiate biometric authentication
+//        self.passwordUIValidation.view.touchAuthentication()
+//    }
 }
diff --git a/SmileLock.podspec b/SmileLock.podspec
index 8f4f7a9..632f7e2 100644
--- a/SmileLock.podspec
+++ b/SmileLock.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "SmileLock"
-  s.version      = "3.0.4"
+  s.version      = "3.0.5"
   s.summary      = "A library for make a beautiful Passcode Lock View."
   s.description  = <<-DESC
                    1. Create a beautiful passcode lock view simply.
diff --git a/SmileLock/Classes/PasswordContainerView.swift b/SmileLock/Classes/PasswordContainerView.swift
index 0264496..68e8dfe 100644
--- a/SmileLock/Classes/PasswordContainerView.swift
+++ b/SmileLock/Classes/PasswordContainerView.swift
@@ -194,7 +194,11 @@ open class PasswordContainerView: UIView {
                     // instantiate LAContext again for avoiding the situation that PasswordContainerView stay in memory when authenticate successfully
                     self.touchIDContext = LAContext()
                 }
-                self.delegate?.touchAuthenticationComplete(self, success: success, error: error)
+                
+                // delay delegate callback for the user can see passwordDotView input dots filled animation
+                DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
+                    self.delegate?.touchAuthenticationComplete(self, success: success, error: error)
+                }
             }
         }
     }