https://devzone.nordicsemi.com/f/nordic-q-a/7522/device-bluetooth-address-macIn my all projects, I am using this code to obtain and set local device address: uint64_t deviceId = ((uint64_t)NRF_FICR-&gt;DEVICEID[1] &lt;&lt; 32) | ((uint64_t)NRF_FICR-&gt;DEVICEID[0]); ble_gap_addr_t gap_addr; gap_addr.addr_type = BLE_GAP_ADDR_TYPE_PUBLIC;en-USTelligent Community 13Tue, 09 Jun 2015 15:04:41 GMThttps://devzone.nordicsemi.com/thread/26789?ContentTypeID=1Tue, 09 Jun 2015 15:04:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dc936c0d-8270-49f6-b178-0b2e4a55e7bbPetter Myhre<p>Different like explained <a href="https://devzone.nordicsemi.com/question/6566/how-to-get-6-byte-mac-address-at-nrf51822/">here</a>? If not, please edit your question to include the laser markings of the chip, and SoftDevice version.</p> <p>Are you sure you want to use Public Device Address? (See Bluetooth Core specification v4.2, Vol 6, Part B, Section 1.3.1 for more information.)</p><div style="clear:both;"></div>