https://devzone.nordicsemi.com/f/nordic-q-a/61902/nrf9160-deviceid-unicityHi, Could you confirm that DeviceID found in FICR of nRF9160 is: 1/ randomly generated (64 bits = 8 bytes) 2/ they are not unique, but already on the chip when it is shipped out of Nordic warehouses 3/ they don&#39;t change over time, unless ween-USTelligent Community 13Wed, 03 Jun 2020 13:17:00 GMThttps://devzone.nordicsemi.com/thread/253030?ContentTypeID=1Wed, 03 Jun 2020 13:17:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:28469348-2cb5-4af1-8a6e-be3959b3d02dHakon<p>Here are the answers I got;</p> <p>1/ Yes</p> <p>2/ Yes. Code is random but I guess some probability exists that duplicates are created.</p> <p>3/ Yes</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/252758?ContentTypeID=1Tue, 02 Jun 2020 13:07:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8cbe844b-0efa-45aa-ae63-7a81fc0c1854Hakon<p>Hello,</p> <p>I forwarded your questions to the nrf91 team. I will contact you when I receive the answers.</p><div style="clear:both;"></div>