> * If/When the battery dies, does the lock default to locked setting? I assume so, but how annoying would this be? Typically, the home locks are just actuated

> * If/When the battery dies, does the lock default to locked setting? I assume so, but how annoying would this be? Typically, the home locks are just actuated mechanical locks. So the lock will stay in whatever state it was when the battery died. If you want to get into commercial-grade locks, there are magnetic locks that can be configured to fail open or close on power loss. Anyway, the battery is not a big deal. I have a Kwikset lock with a ZigBee module, it runs on 4 AAA batteries. I switched to Li-ion rechargables several years ago, and they last for about 6 months between recharges with moderate door use. It's even longer if the lock is not used often. And the lock starts beeping annoyingly after opening/closing when the batteries get down to 30%, giving you plenty of time to replace them. > * Being a privacy nut, does the lock come with a pre-determined code, or can you generate your own? You always can set your own combinations. And there are biometric locks.