Local Photo Processing
Like other technology companies, Apple’s products analyze your photos to detect faces, scenes and other parts of the composition. The big difference here is that the vast majority of the photo processing and analysis on Apple products occurs strictly on-device.
Apple’s Photos white paper shows off just how far Apple goes to protect its users privacy without compromising the convenience of Apple devices. Using on-device intelligence, Apple itself never learns who or what is in the photos that you take. So you end up with cool and relevant Memories and Sharing Suggestions, but your data is still kept safe and sound.