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RFIDScannerAminu

+#include <ESP8266WiFi.h>
+#include <SPI.h>
+#include <MFRC522.h>
+#include "ThingSpeak.h";
+
+constexpr uint8_t RST_PIN = D3;   //reset pin set  
+constexpr uint8_t SS_PIN = D4;    //slave pin set
+
+MFRC522 rfid(SS_PIN, RST_PIN); 
+MFRC522::MIFARE_Key key;
+
+const char* ssid = "VM8257564";     //wifi ssid
+const char* pass = "Qx6nqdyv4hhy";   //wifi pass
+
+int connectledPin = D8;              //Blue led when connected to internet
+int unconnectledPin = D1;            //Red let when not connected to internet
+WiFiClient client;
+
+const unsigned long channel_id = 1223547;            //Thing Speak channel id
+const char write_api_key[] = "7JWC5PW2TW4YQ10L";     //Thing Speak write api key
+
+String tag;       //define "Tag" as a string
+
+
+
+void setup() 
+{
+
+  pinMode(connectledPin,OUTPUT);          //Set both LEDs to output
+  pinMode(unconnectledPin, OUTPUT);
+  
+  
+  digitalWrite(connectledPin,LOW);
+  digitalWrite(unconnectledPin, HIGH);   //When starting Blue LED off Red LED on
+  
+  
+
+  
+  
+       Serial.begin(9600);
+       delay(10);
+       Serial.println("Connecting to ");
+       Serial.println(ssid); 
+ 
+       WiFi.begin(ssid, pass); 
+
+       Serial.println();
+       Serial.println("Connecting");
+
+      SPI.begin(); // Init SPI bus                     // Attempt to connect to the wifi
+      rfid.PCD_Init(); // Init MFRC522
+       
+       while (WiFi.status() != WL_CONNECTED) 
+          {
+            delay(500);
+            Serial.print(".");
+          }
+          digitalWrite(connectledPin, HIGH);
+          digitalWrite(unconnectledPin, LOW);
+          
+      Serial.println("");
+      Serial.println("You are now connected to ");
+      Serial.println(ssid);
+
+      ThingSpeak.begin(client);
+}
+
+void loop() {
+  if ( ! rfid.PICC_IsNewCardPresent())
+    return;
+  if (rfid.PICC_ReadCardSerial()) {             //when a card is detected print its ID value
+    for (byte i = 0; i < 4; i++) {
+      tag += rfid.uid.uidByte[i];
+    }
+    
+    
+    Serial.println(tag);
+    if (tag =="160248110163") {
+      Serial.println("Access Granted");                      //If statment. If ID scanned = 160248110163 then write to thing speak. More ids can be added should the need arise
+      
+      ThingSpeak.setField(3, String(tag));
+      ThingSpeak.writeFields(channel_id, write_api_key);
+    }
+
+    
+    
+    tag = "";
+    rfid.PICC_HaltA();
+    rfid.PCD_StopCrypto1();
+  }
+}
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