A tool that captures information about Bluetooth devices can do which of the following?

• A. It can map past sightings of the same devices on a map.
• B. It can disable Bluetooth devices remotely.
• C. It can permanently erase device history.
• D. It can automatically decrypt Bluetooth traffic.

Answer: (A)

Recording sightings of Bluetooth devices as you scan an area lets you build a history of where and when those devices were seen. The tool captures identifiers like device addresses, names, signal strength, and timestamps, and you can plot these on a map to visualize patterns—where devices tend to appear and how they move over time. That capability is the essence of the option: it directly reflects logging past observations and displaying them geographically.

Disabling devices remotely isn’t what a passive discovery tool does; it would require a control mechanism to target and shut down devices. Permanently erasing device history isn’t the function of a typical Bluetooth scanner either—that would involve altering data on devices or in its own logs, not just recording sightings. Automatically decrypting Bluetooth traffic isn’t generally feasible; even if traffic is captured, it’s encrypted and decrypting it would require the proper keys and vulnerabilities, not something a standard capture tool can do by default.