It sounds like you have a heavy duty door lock to be very secure, but you are essentially trying to backdoor all that security with a new internet-connected thing. An adversary only has to break the weakest link here, rendering the physical door lock obsolete.

If you are just going to have some digitally-connected device ultimately controlling access to the house, I’d go with just some standard door lock that does that (i haven’t used em but they exist). The physical lock on those is surely less what you have know, but with your proposed solution the physical lock probably isnt what people who crack anyway.

My local newspaper had this, i changed my credit card to a fake card number that developers use for testing.

Now i can physical mail every two months saying they cant properly charge my card.

So theyve spent $10+ on mailing me after I paid my $2 promo rate to them