I don't know if this is common, but at the hospital I work, if I type 1+code as my access code to any door, the door will open, but security will receive an ale

I don't know if this is common, but at the hospital I work, if I type 1+code as my access code to any door, the door will open, but security will receive an alert as suspected hostage situation. I've always wondered if an adversary asks me which code is mine, what I should tell them, provided they know about the above rule... Perhaps code-1?