The handy new feature can be found in the Settings app under Apple ID → Password & Security → Automatic Verification. When enabled, Apple says iCloud will automatically and privately verify your device and Apple ID account in the background, eliminating the need for apps and websites to present you with a CAPTCHA verification prompt.
Apple recently shared a video with technical details about how the feature works, but simply put, Apple’s system verifies that the device and Apple ID account are in good standing and presents what is called a Private Access Token to the app or website. This new system will offer a better user experience for tasks such as signing into or creating an account, with improved user privacy and accessibility compared to CAPTCHAs.
No more unpaid work helping Google train its autonomous vehicle systems? I’ll believe it when I see it.