Tunnel works by creating what’s called a Faraday Shield,named after the British scientist Michael Faraday who invented the shielding in 1836.
A Faraday Shield is a topologically complete, conductive enclosure designed to block non-ionizing radiation in the form of electromagnetic frequencies (EMF).
Historically, Faraday Shields have been large and cumbersome to construct. Tunnel solves that problem. It’s a portable Faraday Shield in the palm of your hand.