But you're not trying to access the software, you're trying to unlock the lock. DMCA concerns itself with copyrighted works behind some protection mechanism: te

But you're not trying to access the software, you're trying to unlock the lock. DMCA concerns itself with copyrighted works behind some protection mechanism: technically, if you're accessing the lock's firmware, discover it's encrypted, then attempt to decrypt it, you're violating the DMCA. In addition, if you publish the decrypted software, you're infringing copyright. In either case, these are probably not CFAA violations.