When transporting a cellular telephone as evidence, what type of bag should be used to prevent contact with the device?

Using a Faraday bag for transporting a cellular telephone as evidence is essential due to its specific design to block electromagnetic fields. This characteristic prevents any external signals from affecting the device, which is crucial in maintaining the integrity of the data stored on the phone. When dealing with digital evidence, preserving evidence from remote wiping, tampering, or transmitting signals is a priority, and a Faraday bag ensures that the device remains isolated from external interference during transport.

Other options do not provide the same level of protection. For instance, a lead-lined container may not effectively prevent signals and could pose difficulties with accessibility. A box lined with aluminum foil might also not have the consistent shielding needed for secure transport and might not provide the same reliability as a specially designed Faraday bag. Waterproof bags are useful in protecting from moisture damage but do not address the primary concern of shielding against electromagnetic signals. Thus, the Faraday bag is the most appropriate choice for securely transporting cellular devices as evidence.