Which technology allows for short-distance wireless communication among devices?

Bluetooth is designed for short-distance wireless communication among devices, typically covering distances of up to 30 feet (10 meters). It is commonly used to connect peripherals such as headphones, speakers, and keyboards to smartphones, computers, and other devices. The technology supports low-power usage, allowing devices to communicate effectively without draining the battery quickly, which is especially important for mobile devices.

While Wi-Fi allows for wireless communication, it is aimed at enabling connectivity over longer distances, typically within the range of hundreds of feet, making it less suitable for very close-range applications compared to Bluetooth. NFC, although also a short-range technology, is specifically designed for transactions and data transfer at an even shorter distance, usually just a few centimeters. Ethernet, on the other hand, relies on wired connections, so it does not apply to the context of wireless communication. Hence, Bluetooth is the most appropriate choice for short-distance wireless communication among devices.