diff --git a/includes/modules/payment/wirecard_checkout_page.php b/includes/modules/payment/wirecard_checkout_page.php
index 42f91d4..87e427a 100644
--- a/includes/modules/payment/wirecard_checkout_page.php
+++ b/includes/modules/payment/wirecard_checkout_page.php
@@ -36,7 +36,7 @@
 define('MODULE_PAYMENT_WIRECARD_CHECKOUT_PAGE_IFRAME', 'ext/modules/payment/wirecard/checkout_page_iframe.php');
 define('MODULE_PAYMENT_WIRECARD_CHECKOUT_PAGE_SUCCESS', 'ext/modules/payment/wirecard/checkout_page_success.php');
 
-define('MODULE_PAYMENT_WIRECARD_CHECKOUT_PAGE_PLUGINVERSION', '1.6.0');
+define('MODULE_PAYMENT_WIRECARD_CHECKOUT_PAGE_PLUGINVERSION', '1.6.1');
 
 define('MODULE_PAYMENT_WIRECARD_CHECKOUT_PAGE_TRANSACTION_TABLE', 'wirecard_checkout_page_transaction');
 define('MODULE_PAYMENT_WIRECARD_CHECKOUT_PAGE_WINDOW_NAME', 'wirecardCheckoutPageIFrame');
@@ -51,7 +51,7 @@ class wirecard_checkout_page
 	/**
 	 * constructor
 	 */
-	function wirecard_checkout_page()
+	function __construct()
 	{
 		global $order, $language;
 
@@ -146,6 +146,23 @@ function javascript_validation()
 	 */
 	function selection() {
 
+		if (tep_session_is_registered('customer_id'))
+		{
+			$consumerID = $_SESSION['customer_id'];
+		}
+		if( ! isset( $_SESSION['wcp-consumerDeviceId'] ) ) {
+			$timestamp = microtime();
+			$consumerDeviceId = md5( $consumerID . "_" . $timestamp );
+			$_SESSION['wcp-consumerDeviceId'] = $consumerDeviceId;
+		} else {
+		    $consumerDeviceId = $_SESSION['wcp-consumerDeviceId'];
+        }
+		$ratepay = '<script language="JavaScript">var di = {t:"' . $consumerDeviceId . '",v:"WDWL",l:"Checkout"};</script>';
+		$ratepay .= '<script type="text/javascript" src="//d.ratepay.com/' . $consumerDeviceId . '/di.js"></script>';
+		$ratepay .= '<noscript><link rel="stylesheet" type="text/css" href="//d.ratepay.com/di.css?t=' . $consumerDeviceId . '&v=WDWL&l=Checkout"></noscript>';
+		$ratepay .= '<object type="application/x-shockwave-flash" data="//d.ratepay.com/WDWL/c.swf" width="0" height="0"><param name="movie" value="//d.ratepay.com/WDWL/c.swf" /><param name="flashvars" value="t=' . $consumerDeviceId . '&v=WDWL"/><param name="AllowScriptAccess" value="always"/></object>';
+		echo $ratepay;
+
 	    if ( count($this->_payments->get_enabled_paymenttypes()) ) {
 		    return array(
 			    'id'     => $this->code,
@@ -198,7 +215,7 @@ function checkBirthday(){
                                     var year = birthdate.getFullYear();
                                     var today = new Date();
                                     var limit = new Date((today.getFullYear() - minAge), today.getMonth(), today.getDate());
-                                    if (birthdate < limit) {
+                                    if (birthdate <= limit) {
                                         $(\'#wcp-birthday\').val(birthdate);
                                         $(\'#wcp-no-valid-birthday\').hide();
                                         $(\'#tdb5\').attr(\'disabled\', false);
@@ -328,6 +345,11 @@ function process_button()
 		                  'displayText' => MODULE_PAYMENT_WIRECARD_CHECKOUT_PAGE_DISPLAY_TEXT,
 		                  'consumerMerchantCrmId' => md5($order->customer['email_address']));
 
+		if( isset( $_SESSION['wcp-consumerDeviceId'] ) ) {
+			$postData['consumerDeviceId'] = $_SESSION['wcp-consumerDeviceId'];
+			unset( $_SESSION['wcp-consumerDeviceId'] );
+		}
+		
 		if ( MODULE_PAYMENT_WIRECARD_CHECKOUT_PAGE_DEPOSIT == 'True' ) {
 			$postData['autoDeposit'] = true;
 		}