Apple Reference Photo Lets iPhone Photographers Prove What’s Real Apple introduced a new Reference camera mode for the iPhone 18 Pro at its fall event, which digitally authenticates that an image hasn't been altered with AI by creating an unalterable reference photo with sensor signatures sent to Private Cloud Compute. Apple also announced support for Google's SynthID standard, giving photographers and journalists tools to verify the authenticity of their images. Apple spent much of its “Surprise and shine” fall event https://www.cnet.com/news-live/apple-event-2026-live-updates/ breathlessly detailing the new AI capabilities of Apple Intelligence and the new Photographic Styles with the iPhone 18 Pro https://www.cnet.com/tech/mobile/apple-iphone-18-pro-max-updates-price/ . The new features offer greater AI-assisted abilities to change the look of a photo. In the midst of all this, the company also introduced a defense against AI-generated and -altered images. The iPhone 18 Pro adds a new Reference camera mode, which digitally authenticates that an image you took with the phone hasn’t been altered with AI. It creates an unalterable reference photo captured by the phone’s sensor. The phone sends sensor signatures and other identifiers to Private Cloud Compute to authenticate the reference photo. Reference photos are saved in the Photos app next to the main image that can be edited so you can see the original and edited versions next to one another to compare the two. Apple also announced support for Google’s SynthID https://deepmind.google/models/synthid/ standard for authenticating images. Together, these tools give photographers and journalists ways to verify their work. And fishermen now have verifiable evidence that the fish they caught really was that big.