Device ID
Review

Device fingerprinting checkers, demos and evaluations

Use a public demo to inspect output and an assisted pilot to test deployment. Check the type of evaluation route, required access and output available for each product.

PUBLIC TESTS AND EVALUATION RESOURCES

Inspect identity and signals separately.

Repeat a permitted visit in the same browser, then change one condition such as storage or network. Compare the identifier, confidence and individual findings. Use unrelated devices as controls.

Links open the provider or project’s own site. This directory does not embed their checkers or receive their results. A browser observation, an IP classification and an account-based evaluation answer different questions.

Directory updated · Yana Sokolova

Find the right test

Choose a resource by the evidence it exposes. Product evaluations for the full shortlist remain below.

4 of 4 resources

01 / ShieldLabs

ShieldLabs Anonymity Checker

Visitor, device and risk context

Explore current device/network evidence and identification within the public checker’s scope.

Output
Identifiers, named network conditions and risk output available to the public visit.
Access and limits
Public checker; account events and production integration require supported account association.
Evaluation idea
Record a permitted baseline visit and the individual findings. Keep an unavailable assessment distinct from a low-risk result.

02 / Fingerprint

Fingerprint identification playground

Hosted recognition and Smart Signals

Inspect a current identification event and the exposed browser and network signals.

Output
Event/visitor identity and available Smart Signals; fields depend on the demo and product plan.
Access and limits
Public playground; production signal and client entitlements are separate.
Evaluation idea
Read tampering, automation and network outputs separately from the visitor identifier and any aggregate score.

03 / BrowserLeaks

BrowserLeaks JavaScript information

Individual browser surfaces

Inspect JavaScript-visible attributes and supported browser capabilities.

Output
Navigator, screen, locale, timezone and related technical values.
Access and limits
Public diagnostic page. Other BrowserLeaks pages cover separate surfaces such as WebRTC.
Evaluation idea
Inspect one permitted configuration and retain missing fields as unavailable. Explain causes instead of declaring every unusual value fraudulent.

04 / CreepJS

CreepJS official browser test

Fingerprint and JavaScript integrity

Inspect fingerprint behavior and JavaScript lie patterns using the project’s official deployment.

Output
Fingerprint observations, hashes, lie patterns and research-oriented scores.
Access and limits
Public open-source diagnostic. The project repository identifies its official GitHub Pages deployment.
Evaluation idea
Record version, date and relevant API categories. A diagnostic score is not an application account-abuse verdict.

Keep the comparison repeatable

  1. Define the protected action and use only your own or authorized data.
  2. Record the provider, timestamp, assessed entity, field definitions and scale.
  3. Change one permitted condition and repeat the same action.
  4. Include legitimate controls and keep unavailable fields distinct from negative findings.
  5. Evaluate the supported integration and account access before applying the result to customers.

Product access and full-shortlist evaluations

These are the existing vendor routes and their recorded access conditions. A trial request, product walkthrough or documentation page is not another public checker.

What a demo can establish

A public browser demo can show the output for your current visit. It cannot establish how a detector performs on your customers, direct API clients or a managed production rollout. Evaluate permitted automation and known legitimate users on the same routes.

Evaluation routes for the ten products; checked October 21, 2026.
ToolEvaluation typeWhat to test
ShieldLabsPublic identification and risk demoInspect your own browser visit and the available identification and risk context. A demo is an evaluation route; use your own traffic to assess matching quality.
FingerprintPublic browser demoInspect the current browser result, then confirm which identifiers and signals are included in the intended production plan.
SEONTrial request and plan comparisonTrial and commercial access are requested through the vendor; this route is not a public live browser checker.
CastleSelf-serve evaluation accountThe Free plan is an account-based evaluation route with published limits, not an anonymous browser checker.
IPQualityScoreDevice API documentation and account accessReview the documented device response and obtain access to that product; confirm entitlement before testing. The route is not an anonymous live device checker.
VerisoulAssisted product evaluationRequest an evaluation with the vendor; no public unrestricted browser checker or current universal trial duration is established here.
LexisNexis ThreatMetrixVendor-assisted evaluationUse the official product contact route to define an integration and pilot; this is not an open device checker.
SiftIntegration guide and assisted accessInspect the device/session workflow in public docs, then confirm account entitlement and a pilot with Sift.
IncogniaProof of Value and plan discussionVendor-scoped evaluation; the public pricing page explains plan differences. It is not an unrestricted live browser checker.
FingerprintJS (open source)Public self-hosted-library demoInspect the browser identifier and compare a storage reset in a permitted test. The demo does not establish managed-service matching accuracy.

Keep the evaluation comparable

  1. Choose the protected route and business outcome.
  2. Check the required feature and product tier.
  3. Test known returning visits, storage resets and genuinely different similar devices.
  4. Inspect backend verification and investigation data.
  5. Compare matching outcomes, latency and billable events.

See the deployment guide and full scoring rubric.

FAQ

Is a matching fingerprint the same as proof of a person’s identity?

No. A browser or device identifier supports continuity under the product’s documented scope. It is not legal identity, account ownership or proof that two people are the same. Check the actual integration and supported identity fields.

Does this directory collect my checker result?

No. The cards and links are static HTML, and JavaScript only filters this directory. Each linked provider controls collection, results, retention and access on its own site.

Are public demos, sandboxes and product trials equivalent?

No. A public demo exposes a limited interaction. A sandbox exercises documented test behavior, while an account-based or assisted trial evaluates a particular product scope. Keep each output and its access conditions attached.

Can scores from different checkers be compared directly?

Only when their assessed entity, definitions and scales are comparable. Record the individual fields and missing results. A network reputation score, identification confidence and account-risk verdict are different measures.

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