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Cookie Policy

Last updated: June 9, 2026

What Are Cookies

Cookies are small text files stored in your browser when you visit a website. They allow the site to remember information about your visit — such as whether you are logged in — across page loads and sessions.

This service uses cookies sparingly and only for functionality that is essential to operating the program. We do not use cookies for advertising, behavioural tracking, or analytics platforms.

Cookies We Use

We set one category of cookies — authentication session cookies — and nothing else.

Authentication (Essential)

Session cookies

Set by Supabase when you sign in via a magic link. These cookies keep you authenticated as you navigate the program so you do not have to log in on every page. They expire when your session ends or after a fixed period, whichever comes first.

Provider

Supabase

Type

Session / Persistent

Purpose

Authentication

Duration

Until logout or expiry

Tracking

None

These cookies are strictly necessary to provide the service. Without them, you would not be able to stay signed in or access your program content.

Stripe Cookies (Checkout Only)

When you complete a purchase, you are redirected to Stripe’s hosted checkout page. Stripe may set its own cookies during this process to prevent fraud, maintain your checkout session, and comply with financial regulations. These cookies are governed by Stripe’s own Privacy Policy.

Stripe cookies are only present during the checkout flow. Once you return to our site, only our authentication cookies remain.

What We Do Not Use

We do not use:

  • Third-party analytics cookies (Google Analytics, Mixpanel, etc.)
  • Advertising or retargeting cookies
  • Social-media tracking pixels
  • A/B testing tools that track individual users
  • Fingerprinting or similar persistent identification techniques

Managing Cookies

You can control and delete cookies through your browser settings. The steps vary by browser:

  • Chrome: Settings → Privacy and security → Cookies and other site data
  • Firefox: Settings → Privacy & Security → Cookies and Site Data
  • Safari: Preferences → Privacy → Manage Website Data
  • Edge: Settings → Cookies and site permissions

If you delete or block authentication cookies, you will be signed out and will need to request a new magic link to sign in again. Your saved program data is stored server-side and is not affected by clearing cookies.

Changes to This Policy

We may update this Cookie Policy when our use of cookies changes. The “Last updated” date at the top of this page indicates when it was most recently revised. Significant changes will be communicated by email.

Questions about this policy? Email kevin@howtoprincipal.com.