View source for Use a Faraday cage to block electromagnetic transmissions from a device

A '''Faraday cage''' or '''Faraday shield''' is an enclosure used to block some electromagnetic fields. A Faraday shield may be formed by a continuous covering of conductive material, or in the case of a Faraday cage, by a mesh of such materials. (Source: [[wikipedia:Faraday_cage|Wikipedia]])

Faraday bags are portable containers fabricated with metallic materials that are used to contain devices in order to protect them from electromagnetic transmissions for a wide range of applications, from enhancing digital privacy of cell telephones to protecting credit cards from RFID skimming. (Source: [[wikipedia:Faraday_cage|Wikipedia]])

There are many products out there that claim to be a Faraday cage/bag, so it's important to verify that the product adheres to the [https://standards.ieee.org/ieee/299/3090/ IEEE Standard Method for Measuring the Effectiveness of Electromagnetic Shielding Enclosures]. Make sure that the product is certified to shielding effectiveness standards '''MIL STD 188-125''' and '''IEEE 299-2006'''.