Apparently it is. The odds of manually brute-forcing a passcode like that are pretty dang low, especially in three attempts. By the way, after the third attempt it stops responding, instead just flashing the word INVALID over and over.

Meanwhile, Qubit gets an alert. Unexpected, but it could always be Miles or what's-his-name, back from being ported out (which he's fairly sure they were). He steps aside from what he's working on to check the front door cam. It's not anyone he recognizes, though.

Not wanting to leave work just yet - could be the man just had the wrong address, after all - he simply dials in. Kira will be greeted with a holographic mini-Qubit, tinted blue and hovering at about eye-level. (Yes, there's a holo-projector built into the lock, in case of exactly this scenario.) "Can I help you?" he says.