Nice, I would still be tempted to register the inner door code to open the outer door too. I hate redundancy and love the idea of everyone having 1 credential that opens everything they are allowed to access. At my current place we use codes but we don’t have access to register them unfortunately so I have to put up with memorizing multiple things, on top of having the front office accidentally reset our accounts one day causing us to need to toss all our old codes and memorize a whole new set because they don’t know how to re-register the old codes that they wiped.