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The Madison Avenue Field GuideA field guide to marketing & advertising, by Brandon Mina

GlossaryAI in MarketingAI Watermarking

AI in Marketing

AI Watermarking

Embedding an invisible, machine-detectable signal in AI-generated content, such as Google's SynthID, to identify it as AI-made.

By Brandon MinaCEO, BrandPilot AIUpdated November 2026

Short answer

AI watermarking is embedding an invisible, machine-detectable signal in AI-generated content, such as images, audio or text, to identify it as AI-made. Google's SynthID is one example. Watermarks support transparency and content provenance, though they can sometimes be weakened by editing and are not universally adopted.