The reCAPTCHA API works by collecting information about your hardware and software, such as device and application data and results of integrity checks, and sending that data to Google for analysis. In accordance with Section 3(d) of the Google API Terms of Service, you agree that if you use the API, it is your responsibility to notify users or obtain consent for data collection and sharing with Google. For users in the European Union, you and your API clients must comply with the EU User Consent Policy which can be found at https://www.google.com/about/company/user-consent-policy.html.