What is PIN Visual Protection? Blair April 10, 2019 19:53 Updated Follow In order to visually protect your PIN Code, you can enter any random digits both before and after you enter your PIN Code. Related articles Is my Alfred DB series Smartlock waterproof? What weather conditions / environments are optimal for Alfred? What should I do if I forget my Master PIN Code? How many digits are required for my PIN Code? How do I change the open direction of my Alfred DB series lock? Comments 0 comments Please sign in to leave a comment.