A Bluetooth IC (Integrated Circuit) is the hardware engine that allows a device to communicate wirelessly over the 2.4 GHz frequency band. In 2026, these chips have moved far beyond simple "pairing"; they are now sophisticated Wireless System-on-Chips (SoCs) that include dedicated processors,
Centimeter-Level Accuracy: Older chips used signal strength (RSSI) to guess distance, which was notoriously inaccurate. Bluetooth 6.0 ICs use phase-based ranging to achieve ±10cm accuracy.
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