Sorry, but they're not "spying on your device". If you choose to upload your photos to their cloud service (iCloud Photo Library), they'll use perceptual hashin

Sorry, but they're not "spying on your device". If you choose to upload your photos to their cloud service (iCloud Photo Library), they'll use perceptual hashing and private set intersection tech to check against a database of known exploitative child imagery to make sure you aren't uploading that to their service. That's it.