Review on 🔒 Large Wisdompro Faraday Bag - 9.5 x 5.5 Inch RFID Signal Blocking Shielding Pouch Case for Cell Phone Privacy Protection, Car Key FOB Anti-Tracking, Anti-Spying Blocker by Tony Wilson

To be honest when I bought these I had full expectations that they would not work properly to protect my car's keyless entry from wireless range extender attacks like they are found in many others do cases. Products on Revain only claim to be able to do this, while the only product that has been found to work costs $35 each. I skeptically put my key in this $9 bag and tried to open the car while standing by the door and was immediately disappointed that the car recognized the key right away and let me in. Boy was I angry! Then I remembered reading about the "silver" part of the pouch which is actually the signal blocking section and put the key in that section instead. From that moment on, the car didn't react at all to my actions, even though I had the bag clamped next to the handle! I would absolutely give this one 5 stars and recommend it to anyone who wants to protect their car from signal booster attacks. I only wish there was a smaller version strictly for a keychain as I would happily buy one for myself, friends and family.