The slip cover is based on the technology behind the electric field-blocking Faraday cage, which protects electrical equipment from lightning strikes. A new program has been reportedly launched by a New York technologist to shield a cell phone’s cellular, Wi-Fi, and GPS signals though a hi-tech slip cover.

Adam Harvey said that developing stealth clothing designed to hide wearers from the spying eyes of drones has come up with the ‘Off Pocket project’ to bring stealth down to a cell phone.

The Off Pocket contains a metal fiber mesh that blocks the wireless signals (frequencies between 800MHz and 2.4 GHz) coming from cell phone towers, Bluetooth and GPS satellites as they attempt to communicate with a phone. The report said that the cover is waterproof and 100 times stronger than conventional signal blocking bags used in law enforcement.

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