A Child Of Atom

Should it worry me at all that my brain has recently started confusing the keys to my apartment and my subway card? I've found myself getting to the turnstile with my apartment keys in my hand rather than my Metrocard several times. It's sort of an auotpilot thing, like how I used to attempt to get into KF's apartment using the keys to my place. My brain said "apartment key" an that was what my fingers did. I've yet to try to get into my apartment with my Metrocard though... so maybe there's hope.