Bluetooth
Bluetooth is a wireless communication technology standard for exchanging data over short distances between fixed and mobile devices, using short-wavelength UHF radio waves. It enables the creation of personal area networks (PANs) with high levels of security and is commonly used for connecting peripherals like headphones, keyboards, and for file transfers between devices such as smartphones and computers.
Developers should learn Bluetooth for building applications that require wireless connectivity between devices, such as IoT projects, wearable tech, or mobile apps that interact with peripherals. It's essential for scenarios involving data synchronization, audio streaming, or controlling hardware without cables, particularly in environments where Wi-Fi is unavailable or impractical.