Paraben StrongHold Bag
In order to prevent the device from connecting to the network, the Blackberry can be placed inside of a Faraday Bag, which blocks radio transmissions. Paraben Corporation, one of the developers of cell phone forensics equipment, produces such a Faraday Bag dubbed the Wireless StrongHold Bag. First responders can help to maintain the integrity of evidence contained in wireless devices through the use of this equipment. It should be noted that power should be supplied to the device if the data is volatile in nature, but the cable may introduce a pathway for electromagnetic signals to penetrate the controlled environment.
Paraben's Wireless StrongHold Bag is weaved from three layers of nickel, copper, and nylon silver. The company also produces a StrongHold Tent, which allows the investigator to enter the radio signal dampened environment and also to bring in other equipment, such as laptops, in order to facilitate the investigation.
More information may be obtained from the Paraben website Paraben Corporation.