Only for new post

Is there a way to prevent duplicate device tokens to be added to the table?

In plugins/all-push-notification/all-push-notification-for-wp.php

Change:

	function all_push_notification_getAllSystemUsers() {	
	global $wpdb; 	
	$only_ios = get_option('sendto_ios');
	$only_android = get_option('sendto_android');

by:

	function all_push_notification_getAllSystemUsers() {	
	global $wpdb; 
	if ( get_post_status ($ID) != 'publish' ) {	
		$only_ios = get_option('sendto_ios');
		$only_android = get_option('sendto_android');
        } else {
                $only_ios = "no";
                $only_android = "no";
       }