|  | .. _bluetooth-samples: | 
|  |  | 
|  | Bluetooth samples | 
|  | ################# | 
|  |  | 
|  | To build any of the Bluetooth samples, follow the same steps as building | 
|  | any other Zephyr application. Refer to :ref:`bluetooth-dev` for more information. | 
|  |  | 
|  | Many Bluetooth samples can be run on QEMU or Native POSIX with support for | 
|  | external Bluetooth Controllers. Refer to the :ref:`bluetooth-hw-setup` section | 
|  | for further details. | 
|  |  | 
|  | Several of the bluetooth samples will build a Zephyr-based Controller that can | 
|  | then be used with any external Host (including Zephyr running natively or with | 
|  | QEMU or Native POSIX), those are named accordingly with an "HCI" prefix in the | 
|  | documentation and are prefixed with :literal:`hci_` in their folder names. | 
|  |  | 
|  | .. note:: | 
|  | The mutually-shared encryption key created during host-device paring may get | 
|  | old after many test iterations.  If this happens, subsequent host-device | 
|  | connections will fail. You can force a re-paring and new key to be created | 
|  | by removing the device from the associated devices list on the host. | 
|  |  | 
|  | .. toctree:: | 
|  | :maxdepth: 1 | 
|  | :glob: | 
|  |  | 
|  | **/* |