How to find a lost phone in a no-cell-coverage camping site?

Re:How to find a lost phone in a no-cell-coverage camping site? by lxgr on Thursday October 26, 2023 @01:14PM (#38028654)

But why only send a single byte if you can send a full UUID within a rounding error of the same resource usage?

If you want it to be compatible with most smartphones, you'll need Bluetooth LE anyway, and that already uses at least 10 bytes on header fields for broadcast packets.

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Re:How to find a lost phone in a no-cell-coverage camping site? by eternityforest on Thursday October 26, 2023 @08:05PM (#38033214)

I suppose it is effectively a rounding error unless you change the actual protocol.

I wouldn't be surprised if there was some trivial way for the manufacturers to add ultra low speed non-bluetooth data to the Bluetooth chips though, so you could have 2400 baud IDs with microwatts of power.

But it's probably not worth it since I suspect the real power drain on airtags comes from the high update rates and maybe the 2 way communication.

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