this post was submitted on 14 May 2024
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homeassistant

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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

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Next school year, my son will be left home after school for a few hours while my wife and I are at work. I'm looking for a way to detect when he's home and have the front door unlock (among other automation scripts that are in place).

I came across this post and was going to get the Tile Pro as it seemed to check off all my requirements:

  • I could put it in his backpack where it can be forgotten.
  • long battery life.
  • Through the Home Assistant integration, it can trigger when it gets in range.
  • It also has a few other beneficial things, so I was thinking of putting one on each of our bicycles in case they're ever stolen. Hell, I could look into putting one on my cat's collar in case she ever gets out.

Then I came across some concerning articles regarding data harvesting. The whole reason I started self-hosting was to prevent data harvesting, so it seems like the Tile is a non-starter for me.

Has anyone been in this (or a similar) situation? Mainly, I'm looking for a device I can put in my son's backpack that can trigger when he's within range, so the house will open for him. BLE seems like it might be a solution, though I run my server on an old Dell r720 enterprise server in my basement, so I don't currently have Bluetooth functionality (and it's pretty far away from the front door, 20+ feet), though getting that is not a dealbreaker for me.

  • Addendum: To people saying just get a key: we have a key for him. I have a monolith sized server in my basement that automates most everything in my house these days, and was curious if anyone had set up something similar to what I was thinking. Home automation is very much a hobby, and I'm using it to learn new things.
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[–] [email protected] 15 points 5 months ago (3 children)

So they are old enough to be home alone, but not have phone access in their home? What's the plan for if they need to call out of the house? Go somewhere else and borrow a rando's phone?

[–] [email protected] 8 points 5 months ago (1 children)

We have a "landline" (3rd cell phone). He'll be going into 5th grade (age 10 for non-Americans). He's not allowed to have a cell phone at school. I also don't want it lost. This will be for an hour or so before my wife gets home.

[–] [email protected] 2 points 5 months ago

It's possible that the school would allow him to drop off a phone in the front office every morning and pick it up before walking home. Depends how nice you are to the office ladies, but that's always a good idea anyway because they're more powerful than you can imagine. (Some school office staff may not be ladies these days but the principle still applies, and in elementary school most probably still are.)

[–] [email protected] 3 points 5 months ago

I assume there is a land line in the house, some people still have those.