Bluetooth Channel Sounding boosts device tracking accuracy to ±20 cm

Bluetooth 6.0, released in 2024, introduced Channel Sounding, which replaces RSSI with phase-based ranging and round-trip timing. The technology achieves ±20 cm accuracy, improving Find My and Find Hub tracking and helping protect digital car keys from relay attacks.

• Channel Sounding measures distance with ±20 cm accuracy
• Android smartphones have supported it since 2024
• Apple adds support in iOS 27 for iPhones with the N1 chip
• The accuracy helps protect digital keys from relay attacks