I’ve been using FakeTag[0] and OpenHaystack[1] coupled with a vibration sensor to notify me when various things happen around my house. Inspired by this [2] article. It’s worked flawlessly for ~2 years.

[0] https://github.com/dakhnod/FakeTag

[1] https://github.com/seemoo-lab/openhaystack

[2] https://hackaday.com/2022/05/30/check-your-mailbox-using-the...