Victorian invention, 21st century application. Nissan GB has adopted a technology that’s almost 200 years old to create a concept solution for reducing smartphone distraction at the wheel. The beauty of the design is its simplicity. The Nissan Signal Shield is a prototype compartment within the arm rest of a Nissan Juke that is lined with a Faraday cage, an invention dating back to the 1830s. Once a mobile device is placed in the compartment and the lid closed, the Nissan Signal Shield creates a ‘silent zone’, blocking all of the phone’s incoming and outgoing cellular, Bluetooth and Wi-Fi connections.