Privacy Policy

This page explains how data is handled on System Notes.

The short version:
We collect as little as possible, only when necessary, and we do not monetize user data.

What This Site Is

System Notes is a content site that publishes system architecture analyses and related material.

Most of the site is publicly readable without an account.

Data We Do Not Collect

• No advertising trackers
• No analytics cookies
• No third-party marketing pixels
• No cross-site tracking
• No behavioral profiling

We do not sell, rent, or trade user data.

Authentication & Access

Some parts of the site may require authentication.

When login is required, access is handled using token-based authentication (such as magic links or short-lived JWTs).

This process may temporarily involve:

• an email address (to deliver a login link)
• a cryptographic token used to verify access

These tokens are used only to authenticate the current session and are not used for tracking.

Cookies

At this time:

• We do not use cookies for analytics or advertising
• We do not use persistent tracking cookies

If authentication requires a short-lived technical cookie or storage entry, it exists solely to maintain the active session and expires automatically.

Data Storage

Any data that is stored is limited to what is required to:

• provide authenticated access
• operate the site securely

We do not intentionally store sensitive personal information.

Third-Party Services

This site may link to external websites.
Once you leave this site, their privacy practices apply.

System Notes is not responsible for the content or behavior of external sites.

Changes to This Policy

This privacy policy may be updated as the site evolves.

If changes are made, the content of this page will be updated accordingly.
There is no retroactive change in how previously collected data is handled.

Contact

If you have questions about privacy or data handling, you can reach out via the contact information listed on the site.

Last updated: 02/03/2026