Bluetooth 5.1 is a wireless communication standard that allows devices to connect and exchange data over short distances. It improves upon previous versions by offering enhanced location services, enabling devices to determine their position more accurately. This is particularly useful for applications like indoor navigation and asset tracking. Additionally, Bluetooth 5.1 provides better energy efficiency and increased range, allowing devices to communicate over longer distances without draining their batteries quickly. It also supports multiple connections, making it easier for users to connect several devices simultaneously, such as headphones, speakers, and smart home gadgets.