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UWB is a short-range wireless communication protocol that co-exists alongside existing standards like Wi-Fi, Bluetooth, and NFC. Unlike those protocols, however, UWB enables exact location tracking down to a few inches. This allows your phone to literally guide you to the tag’s exact location once you’re within UWB range, as pictured above.
Modern flagship smartphones, including the iPhone 14, Pixel 7 Pro, and Galaxy S23 series, support UWB.
From: How do Apple AirTags work and what can you track with it?.
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