Chubb Keys

At our lease-signing for our flat (both here and in Sweden), we were handed a set of keys, including that fancy key on the left. I squealed like a little girl when I first saw it -- to the complete confusion of the Swedes.  And, to be honest, even this time in the UK, I was just as excited.  I then had to explain that back in the U.S., this kind of key was only found in fairy tales or it opened scary doors.  We even called it a skeleton key.  Here, though, they call it a 'chubb' key (which, of course, made Chris and I giggle at such a silly name). Surprisingly, this type of old-school lock mechanism is hailed as largely unpickable -- apparently, even according to Sherlock Holmes! It seems so funny to us, though, to just stick your key in a see-to-the-other-side keyhole and turn...