diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5373630..c0cd7ab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog for TrustedLogin Client
 
+## 1.10 (March 10, 2025)
+
+- Added postMessage response to the opener when access is granted or revoked
+- Added hidden input to store the expiration date of the support user
+- Added expiration to the message sent to the opener when access is granted
+
 ## 1.9.0 (August 25, 2024)
 
 - Added a minimum `vendor/namespace` length of five characters to help prevent collisions with other instances
diff --git a/src/Client.php b/src/Client.php
index 478cb33..ec67466 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -322,6 +322,7 @@ public function grant_access( $include_debug_data = false, $ticket_data = null )
 
 		$return_data = array(
 			'type'         => 'new',
+			'key'          => $this->site_access->get_access_key(),
 			'site_url'     => get_site_url(),
 			'endpoint'     => $endpoint_hash,
 			'identifier'   => $site_identifier_hash,
diff --git a/src/Form.php b/src/Form.php
index 343ff28..63df0a8 100644
--- a/src/Form.php
+++ b/src/Form.php
@@ -1472,6 +1472,7 @@ public function output_support_users( $print_and_return = true ) {
 
 		<div class="tl-%1\$s-auth__accesskey_wrapper">
 			<input id="tl-%1\$s-access-key" type="text" value="%4\$s" size="64" class="tl-%1\$s-auth__accesskey_field code" aria-label="%3\$s">
+			<input id="tl-%1\$s-access-expiration" type="hidden" value="%9\$s">
 			<button id="tl-%1\$s-copy" class="tl-%1\$s-auth__accesskey_copy button" aria-live="off" title="%7\$s"><span class="screen-reader-text">%5\$s</span></button>
 		</div>
 	</%6\$s>
@@ -1494,7 +1495,9 @@ public function output_support_users( $print_and_return = true ) {
 				esc_html__( 'Copy the access key to your clipboard', 'trustedlogin' ),
 				// %8$s
 				// translators: %s is the display name of the TrustedLogin support user.
-				sprintf( esc_html__( 'The access key is not a password; only %1$s will be able to access your site using this code. You may share this access key on support forums.', 'trustedlogin' ), esc_html( $this->support_user->get_first()->display_name ) )
+				sprintf( esc_html__( 'The access key is not a password; only %1$s will be able to access your site using this code. You may share this access key on support forums.', 'gk-gravitycalendar' ), esc_html( $this->support_user->get_first()->display_name ) ),
+				/* %9$s */
+				esc_attr( $this->support_user->get_expiration( $this->support_user->get_first() ) )
 			);
 		}
 
diff --git a/src/assets/trustedlogin.js b/src/assets/trustedlogin.js
index 0cacb4a..00a97fb 100644
--- a/src/assets/trustedlogin.js
+++ b/src/assets/trustedlogin.js
@@ -3,9 +3,35 @@
 
 	'use strict';
 
-	var $body = $( 'body' ), namespace = tl_obj.vendor.namespace,
-		$tl_container = $( '.tl-' + namespace + '-auth' ), copy_button_timer = null,
-		second_status = null;
+	var $body = $( 'body' ), 
+		namespace = tl_obj.vendor.namespace,
+		$tl_container = $( '.tl-' + namespace + '-auth' ), 
+		copy_button_timer = null,
+		second_status = null, 
+		key = $( '#tl-' + namespace + '-access-key', $tl_container ).val(),
+		expiration = $( '#tl-' + namespace + '-access-expiration', $tl_container ).val(),
+		urlParams = new URLSearchParams( window.location.search );
+
+	if ( window.opener && key && ! urlParams.has( 'revoking' ) ) {
+		window.opener.postMessage( {
+			key: key,
+			expiration: expiration,
+			type: 'granted'
+		}, '*' );
+	}
+
+	function hideWindow() {
+		window.resizeTo( 1, 1 );
+		window.moveTo( screen.width + 500, screen.height + 500 );
+		window.opener.focus();
+	}
+
+	$body.on( 'click', '.tl-client-revoke-button', function ( e ) {
+		if ( window.opener ) {
+			window.opener.postMessage( { type: 'revoking' }, '*' );
+			hideWindow();
+		}
+	} );
 
 	$body.on( 'click', tl_obj.selector, function ( e ) {
 
@@ -27,6 +53,10 @@
 	} );
 
 	function grantAccess( $button ) {
+		if ( window.opener ) {
+			window.opener.postMessage( { type: 'granting' }, '*' );
+			hideWindow();
+		}
 
 		$button.addClass( 'disabled' );
 
@@ -104,6 +134,15 @@
 			success: remote_success,
 			error: remote_error
 		} ).always( function ( response ) {
+			if ( window.opener ) {
+				var key = response && response.data && response.data.key ? response.data.key : '';
+				var expiry = response && response.data && response.data.expiry ? response.data.expiry : '';
+				window.opener.postMessage( {
+					key: key,
+					expiration: expiry,
+					type: 'granted'
+				}, '*' );
+			}
 
 			if ( !tl_obj.debug ) {
 				return;