Spymarks, Not Watermarks

Automated excerpt

Google SynthID is a spymark that embeds secret hidden signals “imperceptible to humans” (Google’s own words) into images, audio, text, and video. Audio spymarks operate using principles similar to image spymarks, and they are typically inaudible. Imagine a future where every device is attested and every social media post carries an account-linked spymark.

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