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Best Local Smart Lock for Privacy/Security
(lemmy.ml)
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
I've been fairly happy with Alfred locks using ZigBee. There's still a Bluetooth+App component to those as well for adding choices but you don't need it to use ZigBee for locking/unlocking or viewing status.
Don't use the wifi bridge though. I briefly tried that and it connects to some address hosted in AliCloud of all frigging places