[OK] mounted /solutions/advertising · use=advertising
ADVERTISING
campaign quality without relying on cross-site cookies
Problem
Landing pages often lose continuity before a visitor converts. Cookies can be blocked, cleared, scoped to a browser context, or unavailable in the places where campaign and product data need to meet.
How fingerprint.dev helps
visit
Call /identify on the landing page and store the result with campaign metadata.
convert
Call again at signup, checkout, or lead submission.
join
Use visitor_id and confidence to dedupe conversions and inspect journey quality.
Useful decisions
- Deduplicate repeated lead submissions from the same likely visitor.
- Connect landing-page visits to later conversion events when cookie identity is missing.
- Suppress obvious repeat visitors from expensive acquisition experiments.
- Flag campaign traffic that produces unusual device reuse patterns.
Keep it clean
Use fingerprint.dev for product-side visitor evidence. Do not treat it as consent, ad targeting permission, or a replacement for your privacy obligations.
why cookieless implementation guide