In this paper. an Internet-of-Things (IoT) system containing a relay selection is studied as employing an emerging multiple access scheme. namely non-orthogonal multiple access (NOMA). This paper proposes a new scheme to consider secure performance. https://www.bekindtopets.com/flash-grab-DuramaxTuner-DT8170010101080-Switch-on-the-Fly-Tune-incl-EFI-Live-Spade-cDuramax-LWN-flash-save/