Faraday ID card case

Faraday cases for ID cards, 1 pc.
Features:
The cases work on the principle of a Faraday cage: like a shield blocking electromagnetic waves.
They do not send any signals themselves and do not operate outside of other electrical devices.
Thanks to the discovery of Michael Faraday, many devices in our daily lives protect us from the effects of harmful waves or electrical discharges (such as cables, microwave ovens, cars, airplanes, etc.).
These cases are designed for ID cards to protect the information on them from being scanned and from magnetic field distortion due to electromagnetic interference. For example, place bank cards in them and protect them from damage when kept near a phone or other electronic devices.
Technical data:
Dimensions: 88x57mm.
Weight: 3g
Blocks signals: RFID, Bluetooth, 4G connection, Wifi, GPS, GSM, etc.