Testing Faraday Cages
Schneier on Security
DECEMBER 3, 2021
Matt Blaze tested a variety of Faraday cages for phones, both commercial and homemade. The bottom line: A quick and likely reliable “go/no go test” can be done with an Apple AirTag and an iPhone: drop the AirTag in the bag under test, and see if the phone can locate it and activate its alarm (beware of caching in the FindMy app when doing this).
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