I think the question you're asking isn't purely about security. You're asking about a lock that maximizes security while allowing you to digitally transmit a ke

I think the question you're asking isn't purely about security. You're asking about a lock that maximizes security while allowing you to digitally transmit a key - in which case I don't know of any with a track record for resisting attack. Right now the predominant attitude is basically "key control is easier than trying to secure IoT." Easier to use a physical key and manually vet who gets the key than to audit an IoT setup. I tend to agree just because the state of security practices in IoT is so egregiously bad.