How to identify Jetson device securely?

I am doing research at the university. In my project, there is a network of IoT devices. I need to have a device identification mechanism. What’s the best to use? Please don’t tell me about MAC addresses and electronic signatures/certificates. Does NVIDIA Jetson have support PUF or other reliable identifiers at the hardware level?

Moving this topic to the Jetson Nano category for better visibility.

Not pretty sure about your usecase. Our security setting focus more on protecting the board itself. Like preventing other people to overwrite your own filesystem through the re-flash process.

There is not much protection over the network access.