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Smart Lock without Phone Home
(partizle.com)
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
How long do the batteries usually last on that one?
My buddy has a "lockly" which seems a similar idea. Touchpad for codes with rotating numbers (they're not in the same position every time), fingerprint access. It does have a key slot I believe.
The app can be used for setting codes via Bluetooth, or you can set them yourself on the lock. Wifi can be added on with an accessory but isn't required.
Not sure on the batteries. I got it in July 2022, and threw in some rechargeable batteries, but have not had to charge them yet. Guess they last at least a year then.
That's pretty good, actually.