This video is OUTDATED! I made a brand new video (2024) on this subject, go check it out! I think the code is much better and I made sure to go more in depth with how it works.
Check it out here: https://youtu.be/_SXyD1jpWW0
Pastebin: http://pastebin.com/pqAj2QWt
Want to learn how to make a keycard door? I just uploaded a brand new video here: https://youtu.be/q-ZTSJyvxgI
