Internal navigation and tracker marks will be determined much more precisely in the near future thanks to the advent of the Bluetooth 5.1 wireless standard. In essence, it will allow devices to determine the direction in which the Bluetooth connection is coming. Currently, Bluetooth can only estimate distance (depending on signal strength). In version 5.1 there will be two ways to determine the direction using several antennas (either in a smartphone or in a transmitter). For example, the next time you look for lost keys that have a Bluetooth tracker, you will get an arrow indicating the correct path, and not just a point indication. Moreover, the distance will be indicated with centimeter accuracy. The same skill of the new standard will be useful when visiting exhibitions, museums, galleries, shopping centers, etc. Another change in Bluetooth 5.1 will speed up the process of establishing a connection for devices to which you have previously connected. Simply put, when connected to a gadget, it sends a list of its features. This list can be cached to save time and energy (caching has been enabled earlier, but v5.1 will make it smarter). The GATT profile used to communicate smart home devices has also been improved. The first devices with the new Bluetooth will appear later this year.