Identifying Anonymous Users Online: Methods and Alternatives
The customer journey doesn’t begin with a form submission. It begins days before, in a stretch of anonymous behavior most brands can’t see. This whitepaper explains how fingerprinting, first-party cookies, and native mobile SDKs, integrated in a CDP, allow brands to reconstruct the complete journey.
9 sections. Technical and actionable.
A technical paper on identity resolution in a CDP: how fingerprinting works, where its legal boundaries lie, and what becomes possible when the customer journey has no blind spot.
The blind spot in digital marketing
The majority of the customer journey occurs before a user ever identifies themselves. Most brands have no visibility into that gap.
The breakdown of the previous tracking model
An analysis of the breakdown of the tracking model that sustained digital marketing since 2008.
Anatomy of anonymous web tracking
Fingerprinting and first-party cookies solve the same problem in very different ways. The right choice depends on your sector, journey length, and data policy.
Identity resolution in mobile apps
For sessions where browser fingerprinting doesn’t apply, iOS, Android, and Flutter SDKs are the identity resolution layer.
From fingerprint to full profile
Bidirectional, retroactive merge is the moment all anonymous history is linked to a known profile.
The privacy contract
A compliant identity resolution system needs to satisfy these five conditions.
From identity to intelligence
Reconstructing the full journey enables three layers of value: dynamic segmentation, predictive modeling, and cross-channel activation.
FLYDE’s approach
A breakdown of the technical architecture behind the capabilities described in the paper.
Identity as a competitive advantage
Brands that build their own identity layer are not competing on the same terms as those that don’t.
This whitepaper is for you if…
Your attribution is broken
Your models over-credit the last click because they can’t see what happened before registration. This paper explains why and how to fix it.
You’re losing continuity between sessions
Every time a user clears cookies or switches devices, they reappear as new. There’s an identity layer that resolves this without relying on third-party identifiers.
Third-party cookies are deprecating and there’s no plan B
The old model of tracking is being dismantled. This paper explains what to build instead.
You have data but the journey is still incomplete.
You have data. Your CDP is installed but only sees the journey from registration onwards. The blind spot is still there, and this paper is the roadmap to resolving it.
About us
FLYDE AI-native Customer Data Platform
FLYDE is a Customer Data Platform built around the intelligence layer, integrating web, app, transactional, and CRM behavior into a single unified profile, with real-time activation and natural language querying via FLYDE Brain.
This whitepaper is grounded in operating identity resolution at scale: millions of profiles, business-critical journeys, complex technology stacks, and stringent privacy requirements. What you’ll find here isn’t theory. It’s the architecture FLYDE runs in production today, documented so any marketing or data team can understand how it works, what problems it solves, and what it takes to adopt it.
Reconstruct the complete customer journey by unifying anonymous behavior with the known user profile.