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If you use a compatible device, proximity detection can tell you the direction of a signal to give you an idea of where to look. Positioning, on the other hand, can benefit from the search for direction to locate objects at the centimeter level (0.4in). You would not only know that your keys have fallen into the couch, but you would know which cushion to check.
It will take some time before this technology reaches the real world. The Bluetooth 5.1 specification is only available to developers starting today, and it will take some time before device manufacturers and software implement its enhancements. However, whenever this happens, it could trigger a wave of gadgets that do not require (or supplement) GPS or WiFi to provide highly accurate location data. It could also be useful for stores, airports, and other places that rely on Bluetooth tags to help you navigate.
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