Home Assistant can do more with a Matter lock than lock and unlock it. Its Matter integration has actions that report a lock's capabilities and create users and PIN credentials, so a keypad code could come from an automation instead of the lock app. Confirm that your lock accepts codes this way before you plan guest access around it. The maker's app still holds plenty: Aqara Home handles access management and local settings over Bluetooth, and the
U600 has no Auto-Lock or Night Latch settings in a Matter-only setup. Thread is the norm for these locks, so Home Assistant needs a working border router before the first one pairs.