SOLUTIONS
where visitor evidence changes the product decision
Overview
Fingerprint.dev returns a visitor_id and confidence score you can attach to your own events, accounts, orders, support tickets, and review queues.
The examples below are customer-facing patterns, not internal architecture. Keep your own rules in charge and use fingerprint.dev as evidence.
Primary use cases
Recognize returning visitors on landing pages, dedupe conversions, and reduce wasted retargeting when cookies are incomplete.
02 Fraud detectionLink suspicious repeat attempts even when the attacker rotates accounts, emails, IPs, or browser state.
03 User verificationUse device familiarity as one signal for login, recovery, payout, and high-risk account actions.
Other patterns
Limit trial resets and repeated anonymous access.
Review repeat abuse across sellers, buyers, and payment attempts.
Give agents context during account recovery without exposing raw browser signals.
Join product events when cookie identity drops between visits.
How teams use it
Call /identify from the browser, server, or edge.
Store visitor_id and confidence with your business event.
Apply your own threshold, review rule, or step-up workflow.