Collecting keys in Tarkov can be annoying, because even if you have good storage containers to hold them, it’s not obvious if a new key you just looted is one that you own already or not.
This mod was my solution to that problem. The key chains are coded like weapon attachment rails, and only hold 1 of each key, making it easy to tell if you looted a new key or just a duplicate of one you already own.
HUGE thanks to DrakiaXYZ for maintaining this mod for me for the past year or so.
Drakia’s GitHub fork (more up to date)