Bluetooth has been able to determine whether another device is nearby for many years. What it has historically struggled to do is determine precisely how far away that device actually is. Bluetooth Channel Sounding changes this. Introduced with Bluetooth Core 6.0, Channel Sounding adds a standardised mechanism for secure, fine ranging between two Bluetooth Low Energy devices.

Bluetooth Low Energy has evolved from a low-power companion to Bluetooth Classic into the foundation for many of Bluetooth’s most important new capabilities. Understanding its radio architecture, protocol stack and communication models explains why Bluetooth is now expanding into positioning, audio, IoT, higher-performance applications and entirely new device categories.

Bluetooth is entering one of the most significant periods of innovation in its 25-year history, expanding far beyond audio into AI, gaming, precision location services, digital keys, and advanced device tracking.