Thank you for the documentation! By quick check i see there are some error codes related to facial recognition indeed, but i'm not very convinced it would be possible to get "clear" notification which face is detected on which camera, and i don't think i want to spend $1000+ just to check that -...
Well, then that makes no sense of changing my current NVR - as i'm processing images from those few cameras separately on PC anyway. But it looks like a shame to me, that NVR have capability of facial recognition (and is expensive like hell because of that) but we can't do much with that...
Currently i'm using a PC with Nvidia GPU to process streams from Hikvision cameras and unlock some doors at house if specific people are recognized (so when i get from store with bags in hands i don't have to use keys to open doors :) )
As keeping that PC 24/7 is not quite power efficient, and...