Re:I mailed an AirTag and tracked its progress
by goldenkey on Tuesday May 11, 2021 @06:26PM
(#27124383)
The GPS locators are heavier with shorter battery life. This has been my experience from GPS pet trackers. Since Bluetooth Low Energy does not require as much energy or range, the form factor is greatly decreased.
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Re:I mailed an AirTag and tracked its progress
by maven29 on Wednesday May 12, 2021 @12:30AM
(#27126601)
You might realize this, but just for clarity, Bluetooth LE has similar range to Classic Bluetooth, with the exception of 125kbps LE long range coded PHY, introduced with BT5.0. You can potentially reach from 1km away outdoors.
The Nordic Semiconductor NRF52832 used in the airtag, unlike NRF52840, does not support this.
https://colinoflynn.com/2021/05/apple-airtag-teardown-test-p...
https://www.nordicsemi.com/Products/Low-power-short-range-wi...
Apple seems to have removed support for long range coded PHY from iOS as well, so other vendors can't make use of coded PHY either. It was present in iOS 13, seems to be absent from iOS 14.
Re:I mailed an AirTag and tracked its progress
by wklauss on Tuesday May 11, 2021 @07:10PM
(#27124774)
yes but if you just want to find where someone leves or goes, you don't need a device following them for a year. Ar day or two is enough, and GPS trackers give you that and a much greater accuracy.