As a heads-up: The MCUXpresso SDK SIM_GetUniqueId() function can be used to retrieve the unique ID (UID) of the part. I noticed that with using the SDK only 96 of the available 128 bits are retrieved.
I'm using the SDK 2.8.2, and as a workaround I had to set the SIM_UIDH defined.
More details in
Getting a 96bit Unique ID for each Kinetis Device using MCUXpresso SDK | MCU on Eclipse
So if you need the full bits, make sure you set that define. I hope this will be fixed in an updated version oft the SDK.
I hope this helps,
Erich
