Privacy notice
Last updated September 12, 2026.
Information used for book orders
When you buy a book directly from this site, we use the name, email address, shipping address, and gift details you provide to process and deliver the order and provide customer service. Stripe processes payment-card details; this website does not store full card information. Order records may be retained for accounting, tax, fraud-prevention, and fulfillment purposes.
Analytics and advertising measurement
When configured, this site uses Google Analytics 4 and Google Ads measurement to understand site use, evaluate advertising, and measure completed book purchases. Google measurement may receive ordinary technical and usage information such as the page visited, browser or device information, campaign parameters, and an advertising click identifier such as gclid.
For book purchases, measurement may include non-personal ecommerce details such as the book format, quantity, price, promotion code and discount, shipping and tax amounts, currency, and the site’s unique order number. We do not send your name, email address, phone number, street address, gift message, or payment-card information to Google Analytics or Google Ads.
Cookies and ad-click attribution
Google measurement may use first-party cookies or similar browser storage to associate a visit or completed purchase with an earlier advertisement and to reduce duplicate transaction reporting. Campaign parameters such as utm_source, utm_medium, utm_campaign, and gclid may also be retained with an order for campaign reporting.
Your choices
You can restrict or delete cookies using your browser settings. Google also provides controls through My Ad Center and the Google Analytics Opt-out Browser Add-on. Blocking measurement storage may reduce our ability to attribute a purchase to an advertisement, but it does not prevent you from browsing the site or purchasing a book.
Where applicable law requires consent before non-essential measurement is used, additional consent controls should be enabled before Google measurement identifiers are activated.
Contact
Questions about this notice or a direct-book order may be sent to biltron@tronsetbio.com.