South Korea’s ETRI achieves first reliable magnetic communication at 100m depth
Published on: April 1, 2026, 6:32 p.m. | Source: The Economic Times
A groundbreaking wireless system from ETRI now allows voice communication up to 100 meters underground, overcoming limitations of traditional radio waves. This magnetic field-based technology promises to revolutionize rescue operations in mines and tunnels, potentially saving lives by enabling crucial contact with those trapped. Researchers aim to integrate it with smartphones for wider accessibility.
