Privacy & measurement

Updated October 14, 2026

The Lucidian Library is an independent public collection of books, listening experiences, original music and connected creative projects. You can use the public Library and read the free Diary without enabling Google advertising measurement.

Site measurements

The Library operates first-party event tracking for navigation, Reader usage, music listening, referrals and site reliability. This may store a browser-generated anonymous device identifier and session identifier, event and route names, and campaign/referrer information. Vercel Analytics is also included. These systems are separate from your Google Ads choice.

Optional Google Ads measurement

When you choose Allow measurement, the Library loads Google’s advertising tag (AW-18510064864) and may use measurement cookies to understand whether advertising leads to the free Diary Reader or a click toward an external purchase destination. Ad personalization is disabled in this site’s tag configuration. A page visit, link click or playback is not treated as proof of a purchase.

If you choose Decline, the Library does not load the Google Ads tag on a new visit. Your preference is stored in this browser. The choice prompt disappears after you respond; you can change your decision later using the controls below, linked from the Library footer.

Your Google Ads measurement choice

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You can change this optional choice here at any time. The Library remains available when you decline.

External purchases and accounts

Amazon, Tarbix Academy, the Lucidian Apothecary store and other destination sites may apply their own privacy terms and measurement. The Library does not treat leaving for one of these destinations as a completed order. Any verified sale belongs to the payment provider’s actual receipt.

Controlling your data

You can decline optional ad measurement, change your choice later using the preferences above, clear this site’s storage in your browser, or use browser tracking protections. The Library’s optional advertising choice does not remove other first-party measurement. For broader privacy requests, use the current contact method published by the Library or its operating company.

Google also provides information about advertising technologies and privacy.