Which protocol is best for exchanging data over short distances?

Bluetooth is designed specifically for short-range wireless communication. It operates effectively within distances of up to around 100 meters, depending on the Bluetooth class, and it establishes connections between devices such as smartphones, headphones, and other peripherals. Its widespread adoption and compatibility with numerous devices make it an ideal protocol for exchanging data over relatively short distances.

The protocol utilizes low energy consumption, making it suitable for battery-powered devices, and supports high data transfer rates that enhance user experience for applications such as audio streaming and file sharing. Additionally, Bluetooth's ability to handle multiple devices simultaneously adds to its robustness in short-range data exchange scenarios. This balance of range, data rate, and energy efficiency positions Bluetooth as the optimal choice in the context of the question.