You grab your trusty SICKLE with your ENCRYPTION MODUS. To retrieve it, you'll need to hack the code to open the CARD VAULT left behind.
This will obviously prove to be a completely ridiculous and untenable way of managing an inventory, and lead to a great many follies. Later on, you would swap your modus with your hacker friend, a guy who unlike you happens to be competent with programming. It would only make sense.
But for the time being it makes your life kind of a nightmare. There are so many stupid things that happen because of this modus. So many, you just have no idea.