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I'm guessing this would also run through BLE
Yes, absolutely - I'd be pretty sure it works like Apple's iTrackers - there's some info on that at https://github.com/seemoo-lab/openhaystack
When I first heard about this a few months ago I did try and find info and to reach out to someone at Google, but they didn't know much about it either or who to contact.
If anyone knows about this or has a contact at Google that might be some help please let me know. I'd be very happy to do the legwork to get this in Espruino devices
edit: I just asked someone else - at some point, someone must know about it!
I liked Eddystone https://www.espruino.com/Eddystone before but it's been disabled for sometime now due to abuse.
Now it looks like Google is again trying something similar with the "Find My Device" function:
https://arstechnica.com/gadgets/2023/05/bluetooth-tags-for-androids-3-billion-strong-tracking-network-are-here/
https://blog.google/products/android/google-android-safety-features/
I'm guessing this would also run through BLE
Has anyone else worked on this? I can't seem to find any documentation on the protocol; I'm guessing once we have docs it should be relatively straightforward(?) to turn a puck into a tracker that shows up in Find My Device. There might be some process to register trackers in order to avoid abuse but that's not necessarily a technical limitation.