Bluetooth 5.1, an updated version of the Bluetooth wireless communication standard, offers enhancements in performance and functionality. This version introduces a new feature called Direction Finding, which significantly improves location services. It allows devices to determine the direction of a Bluetooth signal, resulting in highly accurate positioning capabilities. Bluetooth 5.1 also provides an improved Advertising Channel Indexing feature, which optimises the process of connecting devices. It also enhances the GATT caching feature, resulting in more efficient data exchange between devices. The power consumption in Bluetooth 5.1 remains low, making it ideal for battery-operated devices. This version also maintains backward compatibility with previous Bluetooth versions, ensuring seamless integration with older devices.