No lock would keep a determined adversary out. We have Ring, so you’re right, we are exposing ourselves to Internet foes, but it is Ring / Amazon, so they have

No lock would keep a determined adversary out. We have Ring, so you’re right, we are exposing ourselves to Internet foes, but it is Ring / Amazon, so they have lots of reason to keep things secure. A key isn’t all that great at keeping secure either given you can just borrow it for five minutes and make a copy without ever taking to anyone.