Hi guys! I have a fully tested and a fully working keypad that uses item frames in 1.8/1.9 using comparators. It really works with a customizable code (default is -> -> ->). I will make a big version soon... it is a redstone world that has a few other attempeted things. Some worked, some didn't. I will publish once I am done with a few other things and it will be cool. ATTENTION: Please use 1.8 or later, due to item frames are not compatible with comparators in 1.7-. World Download coming soon.