URL checksum check
You can protect your script for being used as redirect for spammers links by enabling this feature. Checksum password and Checksum error url are required fields. This feature works with plain and base64 encrypted urls. Prior any operation, all clicks are checked for checksum and are redirected to Checksum error url in case gallery url dont match with checksum. You have to manually rebuild all your index pages, niche pages, sponsor pages and archives after enabling this feature in order to make your links working.