We don’t, unfortunately. The only way to not be at the mercy of lock makers is to make our own locks… unfortunately that’s a very expensive proposition… do we have any mechanical engineers in the house? Can we reverse engineer some locking mechanisms? Can we make our own design? The electronics are not the issue for us, it’s the mechanical design that’s at issue.
I started this topic just now: https://forum.dangerousthings.com/t/open-source-deadbolt-lock
with a fresh empty github repo: GitHub - VivoKey/lock-deadbolt: Open source deadbolt lock design