Bluetooth & High Accuracy Direction Finding (interview)
summary
Bluetooth gains a direction-finding feature (added 2019) that uses two methods, Angle of Arrival (AoA) and Angle of Departure (AoD), to locate tags to within 10 centimeter accuracy. Use cases shown include finding lost items, pointing a phone at a painting to get object-specific info, asset tracking indoors and a Bluetooth-based indoor GPS alternative. Underlying tech is Bluetooth Low Energy and the expanding Bluetooth mesh for networks of thousands; location services are forecast at 431 million devices in 2023.
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