I was looking at a mod, and also referenced this mod for my retexture, called "Yu-Gi-Oh Gensec Security Keycards" (MOD: https://modworkshop.net/mydownloads.php?action=view_down&did=13350). The creator of the mod is Iron Predator (USER: https://modworkshop.net/member.php?action=profile&uid=37).

I wanted to the same thing for K-On but realized there aren't many cards that are actually uploaded to use, only a few. After a little while of scrolling, just when I was about to give up retexturing this keycard mod I saw the Mio Akiyama Fanclub card. I realized that instead of giving out multiple cards like Iron Predator did for Yu-Gi-Oh, I could be able to just make this one specific card instead.

The only problem is that there is only one texture file, not two. It's kind of disappointing because you get the keycard reversed either if it's in the world or in the scanner. I personally I like the "B-N" because you don't normally look at a keycard when picking it up but instead pay more attention to it when it's actually in the scanner. But both options are there for anyone who wants it.

Just make sure to only choose ONE folder though which goes into your "mod_overrides" folder.

Remember B-N means it's backwards before you pick it up but it looks normal when it's in the scanner
-------------- N-B means it looks normal before you pick it up but backwards in the scanner