Will dig into that when I get a moment 
Yeah, so it seems like it would cover all the ground the ATECC chips cover but also seems to have a way to encrypt the transport. It also has a lot of other features that may or may not be necessary. From what I can tell the ATECC is essentially unnecessary with this.
Their SDK stuff includes a PKCS11 module so you can hook it into OpenSSL directly.
And while I’d prefer to implement support for it from Elixir, as you say, there is an implementation. The fast path is probably to lean on their implementation initially.
I’m quite curious about the support for NFC-ish powering and provisioning. Being able to provision/program devices by blooping a device to them seems wild. Not important to what I’m currently up to but interesting.
I didn’t dig into that extra I2C functionality, also not clear how running a sensor in plaintext via a secure chip is any more secure than running it directly
Right now I’m travelling and these samples just arrived at home. Near term I don’t have license (read someone paying me) to run a lab on them. Will report more when I do
