Thank you for the follow-up. In my initial response, I provided a foundational overview of remote Photoplethysmography (rPPG) and its role in liveness detection, focusing on bypass resistance against spoofing attacks. Here, I'll expand this into a more comprehensive "thread" — building on the...
(What actually runs live today on every phone, laptop, and KYC camera worldwide — the single biological signal that cannot be faked by any deepfake, robot, or nation-state pipeline, and the exact mechanics that made rPPG the final unbreakable lock as of 24 Nov 2025)
Component (Live Production...