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Detecting Deep Fakes with a Heartbeat.
The researchers at SUNY and Intel found that “biological signals are not coherently preserved in different synthetic facial parts” and that “synthetic content does not contain frames with stable PPG.” Translation: Deep fakes can’t convincingly mimic how your pulse shows up in your face.
From:
https://www.schneier.com/blog/archives/2020/10/detecting-deep-fakes-with-a-heartbeat.html