diff --git a/MFRC522.cpp b/MFRC522.cpp
index 60775f8..d1effe3 100644
--- a/MFRC522.cpp
+++ b/MFRC522.cpp
@@ -1110,6 +1110,49 @@ MFRC522::StatusCode MFRC522::MIFARE_SetValue(byte blockAddr, long value) {
 	return MIFARE_Write(blockAddr, buffer, 16);
 } // End MIFARE_SetValue()
 
+/**
+ * Authenticate with a NTAG216.
+ * 
+ * Only for NTAG216. First implemented by Gargantuanman.
+ * 
+ * @param[in]   passWord   password.
+ * @param[in]   pACK       result success???.
+ * @return STATUS_OK on success, STATUS_??? otherwise.
+ */
+MFRC522::StatusCode MFRC522::PCD_NTAG216_AUTH(byte* passWord, byte pACK[]) //Authenticate with 32bit password
+{
+	MFRC522::StatusCode result;
+	byte				cmdBuffer[18]; // We need room for 16 bytes data and 2 bytes CRC_A.
+	
+	cmdBuffer[0] = 0x1B; //Comando de autentificacion
+	
+	for (byte i = 0; i<4; i++)
+		cmdBuffer[i+1] = passWord[i];
+	
+	result = PCD_CalculateCRC(cmdBuffer, 5, &cmdBuffer[5]);
+	
+	if (result!=STATUS_OK) {
+		return result;
+	}
+	
+	// Transceive the data, store the reply in cmdBuffer[]
+	byte waitIRq		= 0x30;	// RxIRq and IdleIRq
+	byte cmdBufferSize	= sizeof(cmdBuffer);
+	byte validBits		= 0;
+	byte rxlength		= 5;
+	result = PCD_CommunicateWithPICC(PCD_Transceive, waitIRq, cmdBuffer, 7, cmdBuffer, &rxlength, &validBits);
+	
+	pACK[0] = cmdBuffer[0];
+	pACK[1] = cmdBuffer[1];
+	
+	if (result!=STATUS_OK) {
+		return result;
+	}
+	
+	return STATUS_OK;
+} // End PCD_NTAG216_AUTH()
+
+
 /////////////////////////////////////////////////////////////////////////////////////
 // Support functions
 /////////////////////////////////////////////////////////////////////////////////////
@@ -1768,36 +1811,3 @@ bool MFRC522::PICC_ReadCardSerial() {
 	byte result = PICC_Select(&uid);
 	return (result == STATUS_OK);
 } // End 
-
-MFRC522::StatusCode MFRC522::PCD_NTAG216_AUTH(byte *passWord, byte pACK[]) //Authenticate with 32bit password
-{
-  MFRC522::StatusCode result;
-  byte cmdBuffer[18]; // We need room for 16 bytes data and 2 bytes CRC_A.
-
-cmdBuffer[0] = 0x1B; //Comando de autentificacion
-
- for(byte i = 0; i < 4; i++)
-	cmdBuffer[i + 1] = passWord[i];
-
-  result = PCD_CalculateCRC(cmdBuffer, 5, &cmdBuffer[5]);
-
-  if (result != STATUS_OK) {
-    return result;
-  }
-
-  // Transceive the data, store the reply in cmdBuffer[]
-  byte waitIRq = 0x30;    // RxIRq and IdleIRq
-  byte cmdBufferSize = sizeof(cmdBuffer);
-  byte validBits = 0;
-byte rxlength = 5;
-  result = PCD_CommunicateWithPICC(PCD_Transceive, waitIRq, cmdBuffer, 7, cmdBuffer, &rxlength, &validBits);
-
-pACK[0] = cmdBuffer[0];
-pACK[1] = cmdBuffer[1];
-
-  if (result != STATUS_OK) {
-    return result;
-  }
-
-  return STATUS_OK;
-}
diff --git a/MFRC522.h b/MFRC522.h
index 72f8411..f3dad14 100644
--- a/MFRC522.h
+++ b/MFRC522.h
@@ -373,7 +373,6 @@ public:
 	MFRC522::StatusCode MIFARE_GetValue(byte blockAddr, long *value);
 	MFRC522::StatusCode MIFARE_SetValue(byte blockAddr, long value);
 	MFRC522::StatusCode PCD_NTAG216_AUTH(byte *passWord, byte pACK[]);
-
 	
 	/////////////////////////////////////////////////////////////////////////////////////
 	// Support functions