What equipment allows an officer to prevent remote access to a confiscated phone?

The correct choice is a Faraday bag. This specialized equipment is designed to block electromagnetic signals, preventing any form of remote communication with the device inside, such as a mobile phone. When a confiscated phone is placed in a Faraday bag, it effectively isolates the device from all cellular signals, GPS, Wi-Fi, and Bluetooth, ensuring that external parties cannot access or manipulate the data on the phone remotely.

This isolation is crucial in an investigation as it helps maintain the integrity of the evidence by preventing the possibility of data deletion, encryption, or remote wiping that could occur if the phone were to remain connected to networks. The use of a Faraday bag is a common best practice among law enforcement and forensic investigators to secure digital evidence from remote interference.

While other options refer to devices that might have networking or communication capabilities, they do not serve the primary function of blocking external signals like a Faraday bag does. For example, a write blocker is used for storage devices to prevent any write operations during data acquisition, a signal scrambler distorts signals to hinder interception but does not provide complete isolation, and a call blocker is meant to prevent incoming calls and messages but does not offer the same level of protection against remote access as a Faraday bag