this post was submitted on 27 Feb 2025
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Privacy
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Everything about privacy (the confidentiality pillar of security) -- but not restricted to infosec. Offline privacy is also relevant here.
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It currently only has a very basic approach to altitude estimation which we'll be properly integrating into the trilateration algorithm in the near future.
It currently only uses Wi-Fi networks but we'll be extending it with support for using cell towers as a fallback in the near future.
We're in the process of building our own network location database based on scraping all of the cell tower and Wi-Fi data from Apple's service. Scraping all the cell tower data is quick and will be easy to keep rapidly updated. A contributor scraped more than 2 billion Wi-Fi APs over 3 months.
This data isn't copyrightable and Apple freely offers it without requiring authentication. It will be the initial basis for our database, but we'll add other sources including an option to send us data from GrapheneOS devices. We'll provide database downloads to support offline network location.
@[email protected] All of that is amazing! Great work, I'm exited to see it in action!
I assume for it to work either WiFi of WiFi scanning needs to be enabled though, right?
@[email protected] Yes, either Wi-Fi needs to be enabled or Wi-Fi scanning needs to be enabled to allow doing Wi-Fi scans regardless of the Wi-Fi state. There's a new network location option added in the menu for it. We're going to be adding cell tower support too as a fallback approach it can use if there aren't enough nearby Wi-Fi networks. We've also already essentially fully scraped Apple's cell tower data and it will be much easier to provide that for a fully offline mode than the Wi-Fi AP data.