Is it complying to BLE specifications to a add a costume 128bit characteristic to a standard 16bit service?https://devzone.nordicsemi.com/f/nordic-q-a/61242/is-it-complying-to-ble-specifications-to-a-add-a-costume-128bit-characteristic-to-a-standard-16bit-serviceHey, I want to use a standard 16bit service and to add some custome characteristics to it, will this create any compliance issues? Is it complying to BLE specifications to a add a costume 128bit characteristic to a standard 16bit service? Thanks!en-USTelligent Community 13Wed, 13 May 2020 10:19:51 GMTRE: Is it complying to BLE specifications to a add a costume 128bit characteristic to a standard 16bit service?https://devzone.nordicsemi.com/thread/249653?ContentTypeID=1Wed, 13 May 2020 10:19:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:75514202-69f0-4589-b6b6-743dcf24182eJoakim Jakobsen<p>Hi.</p> <p>You should be fine adding a custom 128-bit characteristic to a BT SIG defined (16-bit) service. <br />Only thing that you need to consider is to generate the 128 bit UUID in a way that avoids tampling on existing BT ones. <br />If you need more information, you can read this: </p> <p><a href="https://www.novelbits.io/uuid-for-custom-services-and-characteristics/">https://www.novelbits.io/uuid-for-custom-services-and-characteristics/</a></p> <p>Best regards, <br />Joakim</p><div style="clear:both;"></div>