[nemothekid]

Nothing - but the same habit also compels me to carry my wallet & keys everywhere I go as well. It costs me nothing to carry it, and there are times where I've returned to my apartment after stepping out for a minute to find myself locked out.

[tedmiston]

How do you get locked out if you carry your keys with you everywhere you go?

[cdash]

An always locked door?

[tedmiston]

But he has keys with him, so he's by definition not locked out. Maybe I'm reading into it too much.

[nemothekid]

My door locks automatically when its closed - so when if I were to forget my keys, I would get locked out (which has happened, which is why I always carry my keys).

[Balgair]

Look, I'm not advocating illegal lock-picking here, not at all. But you may want to take a look here: http://www.artofmanliness.com/2014/11/19/how-to-pick-a-lock-...