At this point, our Lending Library app does exactly what we want it to. It keeps track of all our stuff, and who we've lent items out to. If we were to put this app into use, however, there are some security issues inside the app itself that we'd have to deal with.
First and foremost, what's to stop someone from accessing our app and erasing their name from an item they borrowed? That scumbag STEVE might just keep our linear compression wrench forever, if he were so inclined, and we'd have no way of proving whether he still had it or not.
We cannot let such thievery and dishonesty go unpunished! STEVE must be held accountable! So, we need to implement security. Specifically, we need to perform two actions: