diff --git a/includes/helpers.php b/includes/helpers.php
index 8cfe131..41148bb 100644
--- a/includes/helpers.php
+++ b/includes/helpers.php
@@ -105,3 +105,65 @@ function tni_is_subscription_only( $post ) {
 
   return strtotime( $subscription_date ) > strtotime( $today );
 }
+
+/**
+ * Get Unauthorized Posts
+ *
+ * @uses tni_is_subscription_only()
+ * @uses tni_core_check_auth()
+ * @uses get_transient()
+ * @uses set_transient()
+ * @link https://codex.wordpress.org/Transients_API
+ *
+ * @since 1.2.9
+ *
+ * @return array $posts | false
+ *
+ */
+function tni_core_get_unauthorized_posts() {
+  /* If user is authorized, all posts are shown regardless of whether they are "subscription_only" */
+  if( !( function_exists( 'tni_core_check_auth' ) ) && $auth = tni_core_check_auth() ) {
+    return false;
+  }
+
+  $posts = get_transient( 'tni_unauthorized_posts' );
+
+  if( false === $posts ) {
+
+    $args = array(
+      'fields'          => 'ids',
+      'posts_per_page'  => -1
+    );
+    $query = new WP_Query( $args );
+    $post_query = $query->get_posts();
+
+    if( !empty( $post_query ) || !is_wp_error( $post_query ) ) {
+      $posts =  array_values( array_filter( $post_query, 'tni_is_subscription_only' ) );
+    }
+
+    set_transient( 'tni_unauthorized_posts', $posts, HOURS_IN_SECONDS * 12 );
+
+  }
+
+  return $posts;
+}
+
+/**
+ * Purge Transients
+ * Each time a post is published, delete the transient
+ * Currently, disabled but can be activated to delete transients upon publishing post
+ * Note: It will not run when a post is updated
+ *
+ * @uses delete_transient()
+ *
+ * @param int $ID
+ * @param obj $post
+ *
+ * @return void
+ */
+function tni_core_purge_transients( $ID, $post ) {
+  if( 'post' === $post->post_type ) {
+    delete_transient( 'tni_unauthorized_posts' );
+  }
+}
+//add_action( 'publish_post', 'tni_core_purge_transients' );
diff --git a/readme.txt b/readme.txt
index fbca792..fa4d936 100644
--- a/readme.txt
+++ b/readme.txt
@@ -3,7 +3,7 @@ Contributors: misfist
 Tags: custom
 Requires at least: 4.7
 Tested up to: 4.8
-Version: 1.2.8
+Version: 1.2.9
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
 
@@ -22,9 +22,12 @@ This section describes how to install the plugin and get it working.
 
 == Changelog ==
 
+= 1.2.9 Aug 18, 2017 =
+* Added function return array of unauthorized post IDs
+
 = 1.2.8 July 6, 2017 =
 * #33 Fixed PHP error caused when `TNI_Core_Authorization` class is instantiated without passing required values `$file` and `$version`
-* Added new functionality for subscriber-only content - In single.php template, add conditionals `tni_is_subscription_only` and `tni_core_check_auth` to serve alternate content to non-subscribers
+* #77 & #78 Added new functionality for subscriber-only content - In single.php template, add conditionals `tni_is_subscription_only` and `tni_core_check_auth` to serve alternate content to non-subscribers
   * Added `subscriber_only_date` date field
   * Moved new Subscriber Only Content metabox below publish box on edit screen
   * Added `tni_is_subscription_only` that returns true or false if content is subscription-only today
@@ -32,7 +35,7 @@ This section describes how to install the plugin and get it working.
 
 = 1.2.7 June 22, 2017 =
 * #29 Added `audio_url` custom field.
-  * To access value: `get_post_meta( post->ID, 'audio_url', true );`
+  * To access value: `get_post_meta( $post->ID, 'audio_url', true );`
 
 = 1.2.6 June 21, 2017 =
 * Show scheduled (future) single posts to authenticated users
diff --git a/tni-core-functionality.php b/tni-core-functionality.php
index af54f95..f96a6f5 100644
--- a/tni-core-functionality.php
+++ b/tni-core-functionality.php
@@ -10,7 +10,7 @@
  * Text Domain:     tni-core
  * Domain Path:     /languages
  *
- * Version:         1.2.8
+ * Version:         1.2.9
  *
  * @package         Tni_Core_Functionality
  */
@@ -52,7 +52,7 @@
  * @return object Tni_Core
  */
 function Tni_Core() {
-	$instance = Tni_Core::instance( __FILE__, 'l.2.8' );
+	$instance = Tni_Core::instance( __FILE__, 'l.2.9' );
 
 	return $instance;
 }