I've gotten some pretty expensive packages from verizon at my house before. Back when my parents were together there would be 4 new phones in a box, requiring signature on arrival. Note on door was sufficient for that. You can also leave your door unlocked and write "please set inside" on the note. I'm like 99.9% sure, at least around me, note on door is essentially saying "I'm not gonna be home when you deliver this but I want it, so please leave it kthx. Signed, Derp."