Write It Once | Privacy-Focused Browser Prototype

PROBLEM Repeatedly entering the same personal information across forms creates friction, copying mistakes and unnecessary data exposure.

ARCHITECTURE A browser proof of concept reuses one local input set across five sample documents. It includes a WebAuthn/passkey demonstration and an optional Cloudflare Worker verification component. Public verification behaviour may be simulated when the Worker is not configured.

MY ROLE I defined the product concept and privacy requirements and coordinated AI-assisted implementation, browser testing and acceptance decisions. AI tools produced or revised most implementation code.

IMPLEMENTATION The prototype demonstrates sample form generation, a browser-based input flow and privacy-conscious product scoping. The sample documents are visibly marked; this is a technical demonstration.

VALIDATION The supplied case study cites a recorded September 2026 browser audit, including a passkey flow and automated payload checks with negative controls. These are historical observations, not a newly repeated security audit. The linked public demo can be inspected separately.

OUTCOME A publicly accessible browser PoC demonstrating reusable form input and a passkey interaction. It does not verify identity claims, integrate official authorities, provide a production identity platform or establish complete server-side commitment verification. No zero-knowledge-proof claim is made.

MEDIA The browser screenshot shows the public demo's opening screen without personal input. The accompanying diagram explains the prototype flow and its boundaries.

CLIENT RELEVANCE Browser prototypes, form automation, privacy-conscious UX, integration pilots and acceptance testing.