Human Presence Protocol

Human Presence Protocol (HPP) lets a website ask whether a real person is present at a trusted device, without turning that check into a behavioral CAPTCHA. When a participating page calls HPP, this extension opens a verification panel and shows a QR code for the HPP iPhone app. Your phone performs the hardware-bound, biometric-gated attestation. The HPP verifier decides. The website receives only whether the requested claim succeeded. HPP does not prove your identity just because it proves presence. It does not store biometric templates. This extension does not sell data and does not include advertising identifiers. Production use requires the HPP iPhone app from the App Store and the live HPP verifier.