Google already uses SynthID to watermark pictures created with its Imagen image generation tool. However, it has now added the feature to pictures, AI-generated or not, that users have edited with Reimagine. Reimagine is currently available only on the Pixel 9 series and newer, but all devices can read the SynthID watermarks.

Spotting AI's work can be increasingly difficult as its capabilities and subtleties continue to improve. This continued shift makes labeling AI generated work all the more critical — something that is being done in bits and pieces.

Google on Thursday announced that effective this week, it will begin adding a digital watermark to images in Photos that are edited with generative AI.