Sadly this requires a "donor" tag to impersonate (which then can't be used for as long as you want this to work), or using OpenHaystack which requires using a Mac in order to get the data.
How? The README [0] states that a Mac is required. Do you mean that you use the Find My network to keep track of your Linux machine's location (as described in [1]), but not to locate devices (which requires either macOS or a proxy server running on macOS)?
How do i use it without an Airtag? At the step number 9 the setup asks me to enter an Apple ID, which i do not have. Is there a way to track it on Android or Linux without an Apple ID?
I've tried to create an Apple ID recently on a non-Apple platform and it was a huge PITA. Tried using different browsers on Windows and Linux, tried Apple Music on Android , tried iCloud on Windows - nothing.
Basically I was able to pass email and phone number verification, but then "Continue" button on the "Apple ID & Privacy " page doesn't work and you can't get around it. No error or description whatsoever, just internal server error in the browser's console.
Turns out it's a known problem and the same button works perfectly fine when pressing it on an Apple device. I haven't tried it in a macOS VM though, but presumably Apple flags such accounts anyway.
Yeah, Apple is crap that way. Whenever I log in from my Linux desktop, they "lock" my account and I have to go through a long process where I verify my email, phone, password, and they send me an SMS code.
If you want, I can create an account for you on my Mac, email me (email in profile).