Greenfield police turn to microwave ovens as improvised Faraday cages as department adjusts to U.S. Supreme Court ruling requiring warrants for cell phone searches. Published: Jul. 11, 2014, 5:19 p.m.

Department Has Collected 320 Cell Phones as Evidence This ... Santa Barbara’s MOS Equipment makes a number of Faraday cages that block transmissions and are outfitted with phone chargers and cooling ...

For instance, cell phones will get poor reception or most likely not work at all in a building tricked out to be a Faraday cage. Resale values might also be affected for obvious reasons.

So if the phone inside the shell pings out a signal, you won't be able to detect it outside of the Faraday cage. This also works the other way: Incoming electromagnetic waves will get canceled by ...

KALAMAZOO COUNTY, MI — There’s a new solution to keeping students off phones — and a company in Michigan makes them. Faraday Defense, headquartered in Oshtemo Township, makes “Faraday bags ...