Product review
Fingerprint Sybil attack prevention review
Fingerprint provides persistent device identity and signals for application fraud prevention. It can supply the device side of a campaign’s evidence model; the campaign must associate wallets, define repeated-participation rules and enforce claims through a trusted boundary.
Editorial score
- Evidence layer
- Device identity
- Free access
- 1,000 API calls/month; separate 14-day trial
- Paid entry
- Pro Plus: 99 US dollars/month for 20,000 calls
Key facts
- Identity
- Client collection and server-side results provide a visitor identifier and plan-dependent risk signals. Supported web and native integration options are documented. Source ↗
- Access
- The current pricing page lists 1,000 monthly API calls on the free plan and a separate 14-day trial. Source ↗
- Paid entry
- Pro Plus lists 99 US dollars monthly for 20,000 API calls, then 4 US dollars per additional 1,000 calls. Confirm required signals and tier. Source ↗
Strengths
- A focused identity primitive suits teams that want to build their own campaign association and policy.
- Public pricing exposes API-call units and additional-call charges.
- Device context can corroborate an on-chain or credential-based eligibility review.
Limitations
- A visitor ID is not a proof of unique personhood.
- Wallet-cluster analysis and a campaign’s claim rules are additional components.
- Signal entitlement varies by plan; check the exact evidence needed for the evaluation.
Who it fits
Engineering teams building wallet/account associations and eligibility logic around device identity.
Use the alternatives by evidence layer to compare a different assertion, participant journey or operating model.
What the score means
The 7.1 out of 10 score is an editorial assessment under the same 34-criterion, six-category framework. The rubric emphasizes live coordination prevention and practical application fit; it is not a separate ranking of pure wallet analytics or personhood assurance.
The award and score are distinct. Read all criteria and relative weights and verify the evidence layer required for your campaign.
How to evaluate it
Associate test wallet/account identities with device observations. Compare identity continuity and legitimate shared-device cases, then test eligibility enforcement separately.
Public device demo and developer trial
Inspect your own browser’s output, then validate supported device changes and server-side retrieval on permitted traffic.
Open evaluation routeSources and further reading
- Product and detection approach · checked October 21, 2026
- Pricing and access · checked October 21, 2026
- Integration and result documentation · checked October 21, 2026
- Device history and account-abuse context · checked October 21, 2026
FAQ
Is Fingerprint a complete Sybil-resistant claim contract?
No. It supplies identity and device evidence. The application must associate participants and enforce eligibility and redemption.
Are the free allowance and trial the same?
No. The current pricing page distinguishes 1,000 monthly free API calls from a separate 14-day trial.
Does the score mean Fingerprint is a weak device identifier?
The rubric emphasizes ready-made coordination prevention and operational fit for token/community campaigns. A different device-identity-only rubric can favor different products.
Explore checkers, demos and evaluation routes →