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The iphone13 has a U1 chip inside. The \"U\" in the U1 chip refers to UWB technology. UWB has many applications and use cases. One of Apple's priorities should be to use it in the field of XR (Extended Reality) technology, including helping Apple Glasses track spatial relationships between different objects. One way to do this is with the laser-and-infrared system that Apple has already tried with Animoji through FaceID; The other is through the radio spectrum.