Effective October 13, 2026 · Version 1.0.0
Cookie Notice
This Cookie Notice explains how Thorn Street, Inc. ("Thorn Street," "we," "us" or "our") uses cookies and similar technologies on thornstreet.com, in Leif at platform.thornstreet.com, and on the Published Links made with Leif (together, the "Sites"). For more about how we handle personal information, see our Privacy Policy at https://thornstreet.com/privacy-policy.
What cookies are
Cookies are small data files that a website stores in your browser. A site can also store information in your browser's local storage, which works much like a cookie. Session cookies are deleted when you close your browser; persistent cookies stay until they expire or you delete them. First-party cookies are set by the site you visit; third-party cookies are set by other companies.
What we use
We use only first-party cookies and local storage that the Sites need to work. We do not use advertising cookies, third-party analytics, session recording, or tracking pixels, and we do not allow other companies to set cookies through the Sites.
| What | Type | Where | What it does | How long |
|---|---|---|---|---|
Sign-in cookie (__Secure-better-auth.session_token) |
Essential cookie | platform.thornstreet.com | Keeps you signed in to Leif and protects your account | Up to 7 days, renewed while you use Leif, or until you sign out |
Sign-in check (__Secure-better-auth.state) |
Essential cookie | platform.thornstreet.com | Protects a Google or Microsoft sign-in from being tampered with while it's under way | 5 minutes |
Load balancing (AWSALB, AWSALBCORS) |
Essential cookie | platform.thornstreet.com | Keep your browser on the same copy of Leif while we release an update, so the page keeps working | 1 hour |
Map access cookie (__Host-leif_map) |
Essential cookie | The address a thread's map is served from | Lets your browser load the maps in your own threads | Up to 7 days, and only while your sign-in lasts |
Pending sign-in (leif-code-pending) |
Local storage | platform.thornstreet.com | Remembers the email address a sign-in code was sent to until you finish signing in | Removed when you finish signing in |
Theme (leif-theme) |
Local storage | platform.thornstreet.com | Remembers whether you chose the light or dark theme | Until you clear it |
Interface preferences (leif.rail, leif.threadWidth, leif.closedFolders, leif.notesView, leif.notesBasemap, leif.projectBasemap, leif.notesSeen, leif.heading) |
Local storage | platform.thornstreet.com | Remember how you've arranged Leif: the sidebar and panel sizes, which folders are closed, how Field Notes and projects are shown and on which map, whether you've seen Field Notes, and the home page's greeting | Until you clear it |
Way back from Settings (leif-back) |
Session storage | platform.thornstreet.com | Remembers the page you opened Settings from, so its back button returns there | Until you close the tab |
thornstreet.com sets no cookies and uses no browser storage.
Maps. When you view a map in Leif or at a Published Link, your browser loads map images directly from map providers, which receive your IP address and the usual information a browser sends. They do not set cookies through our maps.
Your choices
Because we use only cookies and storage that the Sites need, we do not ask for consent to them, and you cannot turn them off in the Sites. You can block or delete cookies and local storage in your browser's settings; if you do, you will not be able to sign in to Leif or view your threads' maps.
If we start using cookies that are not essential, such as for analytics, we will update this notice and ask for your consent where the law requires it.
Changes
We may update this notice from time to time. The effective date shows when it last changed.
Questions
If you have questions about this notice, email us at privacy@thornstreet.com.