Cell phones can operate with as little as 1-millionth of a normal signal! A minimum of 80 dB attenuation material is required to achieve blocking, as well as a complete (no leak) seal. The Block-it Pocket works by incorporating pure silver onto a high quality nylon ripstop fabric equaling 100+ dB attenuation. Which is then hand sewn into the inner pocket, extending beyond the cover flap to create a complete faraday enclosure.
Our entire product line incorporates this technology to maximize the protection each product is intended to provide. Extensive testing has proven that the Block-it Pocket products work!
Many people also do not know that virtually all new devices can be accessed remotely, even with the device powered off and the battery removed! It's true! Just read this article we found recently to illustrate the remote accessing of computers.