What does the use of a Faraday Bag accomplish for a powered-on locked device?

The use of a Faraday Bag for a powered-on locked device primarily prevents external communication and data alteration. This is crucial in scenarios where maintaining the integrity of the device's data is essential, such as in law enforcement investigations or cybersecurity assessments.

By placing the device in a Faraday Bag, which is lined with conductive material, you effectively block all incoming and outgoing signals. This means that any wireless communications, such as cellular signals, Wi-Fi, and Bluetooth connections, are obstructed, thus preventing remote access or modifications to the device's content. This is particularly important when handling evidence or sensitive information, as it preserves the original state of the device until it can be examined under controlled conditions.

The other options do not align with the primary function of a Faraday Bag. For example, it does not enable charging; it does not capture signals; and while it can contribute to data recovery efforts, it does not allow for immediate data extraction, as the device must first be examined securely once it is no longer in the Faraday Bag.