So while stumbling around the forums, I was looking for a door lock that would only open a door if a certain floppy disk was inserted. I managed to find one made by theoriginalbit, but noticed that it didn't work in newer versions of ComputerCraft. So I re-wrote about half of the code to make it work once again, and so now I'd like to share it with all of you who might want it. A link to the paste is here, and if you'd like to install it on your system, just type pastebin get TfyyWsgj <filename>. It works best however if you run it on a monitor, because if you run it off of the computer itself someone can terminate the program.

One last note, remember that once you download the program to edit the accepted floppy ID to the floppy disk you have to make it work, and you may want to also edit the variables for redstone and the disk side.