Which technology creates a personal area network using 2.4 GHz?

Bluetooth is the technology that creates a personal area network (PAN) using the 2.4 GHz frequency band. It is specifically designed for short-range communication between devices, typically within a distance of about 10 meters (33 feet). Bluetooth allows for the transfer of data and the establishment of connections, making it ideal for personal devices, such as connecting a smartphone to headphones or pairing a computer to a printer.

This technology operates within the 2.4 GHz ISM band, which is the same band used by Wi-Fi and many other devices, but Bluetooth is optimized for lower power consumption and data rates suitable for the types of applications and devices that commonly use it. Its ability to create a PAN facilitates easy device communication without the need for a central access point, making it versatile for personal use.

In contrast, other options are associated with different networking capabilities or use different frequency ranges. For instance, Wi-Fi Direct allows devices to connect directly without an access point but typically operates on 2.4 GHz or 5 GHz, and it is not specifically categorized as a PAN technology. A mobile hotspot creates a broader internet-sharing capability but functions on larger network types. Near Field Communication (NFC) is designed for very short-range communication, typically less