diff --git a/examples/ReadCard/ReadCard.ino b/examples/ReadCard/ReadCard.ino
index 2043fb5..37d6b99 100644
--- a/examples/ReadCard/ReadCard.ino
+++ b/examples/ReadCard/ReadCard.ino
@@ -11,7 +11,6 @@
 
 #include "Spacecat.h"
 
-
 #define RC522_SS_PIN 15
 Spacecat cat;
 
@@ -20,16 +19,13 @@ void setup(){
     Serial.begin(115200);
 
     //the reset pin of RC522 connected to Ground (GND)
-    cat.RC522_PIN(RC522_SS_PIN);
-    Serial.println("ready");
+    cat.begin(RC522_SS_PIN);
 }
 
 void loop(){
-	
-    if(cat.readCard()){
-        Serial.print("RFID: ");
-        Serial.println(cat.RFID());
-    }
-	delay (200);
+
+    cat.readCard();
+    delay (10);
+    
 }
 
diff --git a/examples/SimpleValidation/SimpleValidation.ino b/examples/SimpleValidation/SimpleValidation.ino
index e886d25..7f3ef7d 100644
--- a/examples/SimpleValidation/SimpleValidation.ino
+++ b/examples/SimpleValidation/SimpleValidation.ino
@@ -4,28 +4,22 @@
  *  Spacecat requires :
  *  RC522 :  https://github.com/miguelbalboa/rfid
  *  ArduinoJson : https://github.com/bblanchon/ArduinoJson
- *  - use the latest version (Currently is 6.14.1)
+ *  - im use the latest version (Currently is 6.14.1)
  *   
- *  An simple example of how to auth the User
- *  - SUCCEED
- *  - FILL_THE_PASSWORD
- *  - ERR_NOT_FOUND
- *  - UNSUCCESSFULL
- * 
- * -- SUCCEED
- * if Users registered and don't have a Password,
- * it will automatically accepted
- *
- * -- FILL_THE_PASSWORD
- * for example i'm use hard code for password : "12345678",
- * if the User Password is match, you'll get a messages on serial Monitor "Password Correct"
- * and if Wrong you'll get "Wrong Password"
- * for real purpose it must have to use keypad,
- * and put User Password into *.enterpassword attributes.
- * 
- * -- UNSUCCESSFULL
- * this case if User, Placment or the Rule does not meet the conditions 
- * 
+ *  An simple example of how to auth the User :
+ *  you can very easily manage user, placement, and can also add the rule for each placement
+ *  
+ *   Every you doing tap card or request to server, You definitely get a return value :
+ *   101  Project not active          
+ *   102  User not active             
+ *   103  Placement not               
+ *   104  SUCCEED                     
+ *   105  UNSUCCESSFULL               
+ *   106  Invalid Password            
+ *   107  User Need Fill the Password 
+ *   108  User reach the limit of parameter             
+ *   109  Not Found
+ *         
  * 
  *  Written by Arif @2019. 
  *  Bandung, Indonesia 
@@ -39,13 +33,31 @@
 const char WIFI_SSID[]     = "";   // your network SSID (name) 
 const char WIFI_PASSWORD[] = "";   // your network password
 
-const char DEVICE_NAME[] = "Device 1";
+const char DEVICE_NAME[] = "";
 const char SPACECAT_USERNAME[] = "";
 const char SPACECAT_PASSWORD[] = "";
 
 #define RC522_SS_PIN 15
+
 Spacecat cat(SPACECAT_USERNAME, SPACECAT_PASSWORD, DEVICE_NAME);
 
+void handleCallback(int code, String refrenceID, String name, String messages){
+
+  Serial.print("Code : ");
+  Serial.println(code);
+
+  Serial.print("Ref : ");
+  Serial.println(refrenceID);
+
+  Serial.print("Name : ");
+  Serial.println(name);
+
+  Serial.print("Messages : ");
+  Serial.println(messages);
+  
+}
+
+
 void setup() {
   //for debuging purpose
   Serial.begin(115200);
@@ -67,39 +79,16 @@ void setup() {
   Serial.println("WiFi connected");
   Serial.print("IP address: ");
   Serial.println(WiFi.localIP());
-	
-  //the Reset pin of RC522 connected to Ground (GND)
-  cat.RC522_PIN(RC522_SS_PIN);
-  cat.begin();
 
+  cat.begin(RC522_SS_PIN);
+  cat.setSimpleCallback(&handleCallback);
 }
 
+
 void loop() {
   
   if(WiFi.status() == WL_CONNECTED){
-  
-    switch (cat.validate()){      
-
-      case SUCCEED:
-        Serial.printf("User Authenticated : %s ", cat.Name().c_str());
-      break;  
-
-      //Password 12345678 is just example, change it with your password
-      case FILL_THE_PASSWORD:
-        Serial.println("Insert Password   :");
-        if(cat.enteredPassword("123456")){
-          Serial.println("Password Correct");
-        }else{  
-          Serial.println("Wrong Password");
-        }
-      break;
-
-      case UNSUCCESSFULL:
-         Serial.printf("Failed : %s", cat.Messages().c_str());
-      break;
-
-      default:
-      break;
-    }
+    cat.loop();
   }
+
 }