What is PIN Visual Protection? Blair April 10, 2019 19:53 Updated 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? How do I add User PIN Codes? Why is Alfred failing to lock? How do I change the open direction of my Alfred DB series lock? Can I keep my existing mechanical deadbolt installation with my Alfred DB series lock? Comments 0 comments Please sign in to leave a comment.