[tsol]

This is really cool, I would love to do this. Is this a particular device?

[wlonkly]

Any NFC sticker should work. I used a non-writable one, with an iOS shortcut that calls the "unlock" URL, since I don't use HomeKit.

For things that aren't security-related like a light, you can use a writable one, and write the URL to the dot so that anyone's phone will be able to turn the light on/off from the sticker.

[nullwarp]

I use home assistant with a set of Yale Zigbee locks but really any lock that can integrate to HA will do the trick