Speaking about security codes, a little story about a tiny hotel I've been in.

When we arrived, there was no reception, the agreement was that once we arrived we would call the receptionist/owner. So we did, and turned out the rooms were prepared in advance, and they would just need to give us code to unlock the main door, code to unlock our room door and some basic instructions -- all of that could be done over the phone. Fine.

So they gave us the code, it was, say, 1234, and our room was 33. So we opened the main door -- worked fine, went to the lobby and tried to open our room. The code 1234 did not work. So we called back and after some checking they apologized and told us that the correct code was--you guessed it---1233.

Luckily there was also a proper metal key in the room--only one though (we were a group of 6), so if we wanted to actually protect our valuables we had to share the metal key.

(Overall, the hotel was great, and all, the owners were nice, all was fine -- it's just that they were apparently not exactly security nerds... 🤓 )