Access and privacy

Privacy Notice

The email address you submit receives a one-time verification code. Entering that code verifies control of the mailbox and starts a secure browser session.

Information used

• Your normalized email address and access status.
• Hashed code, session, and rate-limit records with creation and expiration times.
• Standard hosting and security request logs used to operate and protect the service.

Unverified registration records have a short operational retention period and are removed after their associated challenge retention window.

Service providers

OpenAI Sites and Cloudflare provide application hosting, edge delivery, and database services. Plunk processes the destination address and one-time code to deliver the verification message.

Session storage

A necessary, secure cookie maintains the authenticated session. The cookie contains a random session value; the database stores only its keyed hash.

Research boundary

The field guide contains public-source market research. Do not submit confidential, regulated, or client-identifying information through this application.