Late to the party, have a very good suggestion.

Some very very short back story. In my younger years I had a lot of issues with anxiety when going to bed. Thinking about things I needed to fix or what tommorow would bring. And I realised that imagining a story or a world and setting specific foundational points, like a framework that a story as an example could be worked from. Then each night building something additional on that framework every night in my mind, keeping the core fixed and every new addition as part of this world or story. I would eventually get less and less added and become relaxed and fall a sleep sooner and sooner.

Just like a child wanting the same story every night.

Going back to something known and adding just a little bit or playing with an idea within the set framework is soothing for the mind. Because it familiar.

Edit: a spelling

What seems to be the officer problem?

I mean it might be security by obscurity and some added work to ensure no data loss. I mean pretty darn secure. The intersection between those that wants to access those codes also have immediate access to a floppy drive as well. Must be extremely tiny Cause my guess is they have at most a couple of hour before you notice.