Fingerprint (FingerprintJS)
fingerprint · private
Catches naive and lightly-hardened bots reliably, but is defeated by a properly stealthed browser on a residential IP. The 99%+ framing holds only against low-effort automation.
Marketing claims
No claim captured yet.
Claim archaeology — what has been marketed, and when
Monthly Wayback snapshots of the 2 pages listed below, read back to 2019. A number reaches this timeline only after the sentence around it was read and judged to be Fingerprint (FingerprintJS) describing its own product. Those judgements were made by an AI model (claude-opus-5) and have not yet been checked by a person. Every one is published with the quote it was made from and the reason it was made, so you can check it against the archived page yourself. Numbers that turned out to be customer case studies, uptime SLAs or traffic-composition stats are listed further down — recorded, not published. Nothing is inferred between two dated snapshots.
| Period | Months | What the archived page said | Archived |
|---|---|---|---|
| Jan 2019 – Oct 2019 | 10 | No detection accuracy claim in 6 months where we read a page that has carried it; 4 further months had no readable snapshot | — |
| Nov 2019 – Jan 2020 | 3 | 99.5%…fingerprinting API Fingerprint.js fingerprint PRO Features Start your trial Pricing Open-Source Fingerprint.js PRO 99.5% identification accuracy fingerprint run the demo Fraud detection API for your business E-commerce & Retail Every… | first · last |
| Feb 2020 – Mar 2020 | 2 | Nothing readable that could carry this claim — absence cannot be asserted here | — |
| Apr 2020 | 1 | 99.5%…? "Submitting" : "Learn more"}} FingerprintJS Pro Demo Industries Pricing Tools Open-Source Docs Fraud detection API 99.5% identification accuracy Your work email Learn more Try FingerprintJS Pro free for 14 days, no credit card… | first |
| May 2020 | 1 | Nothing readable that could carry this claim — absence cannot be asserted here | — |
| Jun 2020 | 1 | 99.5%…? "Submitting" : "Learn more"}} FingerprintJS Pro Demo Pricing Open-Source Docs Start Trial Fraud detection API 99.5% identification accuracy Your work email Learn more Run the demo Companies using FingerprintJS Industries ACCOUNT… | first |
| Jul 2020 | 1 | Nothing readable that could carry this claim — absence cannot be asserted here | — |
| Aug 2020 | 1 | 99.5%…Pro Technical Demo Pricing Open-Source Docs Browser Fingerprinting API Stop fraud, spam, and account takeovers with 99.5% accurate browser fingerprinting as a service. Your work email Contact sales Start your free trial Companies… | first |
| Sep 2020 | 1 | Nothing readable that could carry this claim — absence cannot be asserted here | — |
| Oct 2020 – Nov 2020 | 2 | 99.5%…Pro Technical Demo Pricing Open-Source Docs Browser Fingerprinting API Stop fraud, spam, and account takeovers with 99.5% accurate browser fingerprinting as a service. Your work email Talk to an expert Start your free trial Companies… | first · last |
| Dec 2020 | 1 | Nothing readable that could carry this claim — absence cannot be asserted here | — |
| Jan 2021 – Feb 2021 | 2 | 99.5%…Demo Pricing Star Contact Sales Free Trial Browser Fingerprinting API Stop fraud, spam, and account takeovers with 99.5% accurate browser fingerprinting as a service. Get Started 10 Day Trial Cancel Any Time API & Webhooks Visit… | first · last |
| Mar 2021 | 1 | Nothing readable that could carry this claim — absence cannot be asserted here | — |
| Apr 2021 – Sep 2023 | 30 | 99.5%…Demo Pricing Star Contact Sales Free Trial Browser Fingerprinting API Stop fraud, spam, and account takeovers with 99.5% accurate browser fingerprinting as a service. Start Free Trial 10 Day Trial Money back guarantee GDPR/CCPA… | first · last |
| Oct 2023 | 1 | No detection accuracy claim in 1 month where we read a page that has carried it | — |
| Nov 2023 – Dec 2024 | 14 | 99.5%…systems make identity more challenging, we are focused on ensuring our accuracy is the highest on the market. 99.5% accuracy Highest identification accuracy using fingerprinting, fuzzy matching, and server-side techniques.… | first · last |
| Jan 2025 – Aug 2026 | 20 | No detection accuracy claim in 20 months where we read a page that has carried it | — |
No publishable claim was found on these pages for: coverage, false-positive rate, decision latency. Numbers we found and held back are listed below.
Our extractor pulled these numbers out of the same snapshots. Each was held back: a number bound to a metric is not automatically the vendor claiming a capability, and treating it as one would score Fingerprint (FingerprintJS) against something it never said.
| Number | Seen | What it actually is | Archived |
|---|---|---|---|
| 100ms | 2019-02 – 2019-09 6 months | not a vendor claim the page states a range, 80-100ms, and a timeline that stores one value per month would publish the upper bound as though it were the claim…features and selectively query browser parameters that are available. The Pro version has even faster detection (80-100ms) via greater customizability. Easy to use API Written in vanilla JS with zero dependencies, this library can be… | link |
| Page | Era | Months probed | Months read |
|---|---|---|---|
| fingerprint.com/ 2019-01 – 2026-08 | current | 92 | 51 5 blocked 13 not this vendor |
| fingerprintjs.com/ 2019-01 – 2026-08 | pre-rebrand | 92 | 31 |
“Months read” counts snapshots we actually retrieved and searched. 5snapshot(s) were the vendor’s own bot wall rather than the page — the archiver was blocked, so those months are recorded as unreadable, never as “no claim”.
Sanctioned test surfaces
| Surface | Type | Tier | Basis |
|---|---|---|---|
| Playground demo | demo-playground | A | Vendor interactive demo |
| Web-scraping prevention demo | demo-playground | A | Vendor interactive demo |
| Bot firewall demo | demo-playground | A | Vendor interactive demo |
| Self-hosted BotD (open source) | self-deploy-free | B | We host it |
A — vendor invites testing · B — our own deployment · C — passive observation
Our test results
| Surface | Technique | Outcome | When |
|---|---|---|---|
| Playground demo A | — | blocked | 2026-08-12 |
| Playground demo A | — | blocked | 2026-08-12 |
| Playground demo A | — | passed | 2026-08-13 |
Cited external benchmarks
- Proof-of-Human bot benchmarkingIndependent benchmark; detection rates 33-87% across reCAPTCHA v3, hCaptcha, Turnstile, Fingerprint Pro.
We cite these rather than generating real-world bypass numbers against non-consenting production systems. Commercial-vendor figures are self-reported marketing claims, flagged as such above — treat them as the ceiling a paying bypass service advertises.