Hey girls,
I'm not your target group and maybe this was written once, but I have an idea to help you. Many keys have a "key code" which describes the key EXACTLY. I've looked on one of my letterbox keys, there it is just two letters (there only some combinations do actually exist) and three numbers. At house door keys it's often longer. So, when you get a cleaning break, look at the key and try to read the code. You can also look up the system before, so that you know, which letters are actually possible. With this, every locksmith can create an identical key. (When you google key code, most results are about informatics.) I think, there are also online shops, where you can buy such keys.
