Visitor identification
Website visitor identification that names the person, not just the company.
Knock2 identifies the company behind 93% of engaged sessions and the person behind 62% of US ones. Then it sends them straight to your CRM, Slack and sequences.
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01 · Match rate
Identify more of the people already on your site.
Most person-level tools resolve 30 to 40% of visitors. Knock2 resolves 62% of US engaged sessions.
On the same traffic, that means thousands more warm buyers reaching your team every month.
“It was 2,500 people on RB2B and 3,500 people on Knock2.”
Out of 100 identifiable US visitors
Measured on engaged sessions: 10 seconds or longer, or 2 or more pageviews.
02 · Data depth
Every match is a full profile, not just a name.
A LinkedIn URL alone doesn’t book meetings. Each match comes with:
- Verified work email and phone
- LinkedIn, title, seniority and department
- Company size, industry and revenue
- Every page they viewed, and for how long
Emails are checked before anyone reaches out, so you don’t bounce or hurt your sender reputation.


03 · Buying committee
One visitor reveals the whole committee.
B2B deals don’t close with one champion.
When Knock2 identifies a visitor, it also finds the rest of the buying group at that account: sales, RevOps, marketing, finance and the CEO. You know who else to talk to on day one, before they ever visit.
Customers reach 4 to 6x more buyers per account than with person-only identification.

How we're different
Why teams switch from RB2B
Revenue leaders who ran both tools on the same traffic.
Customer interview
“We used to have RB2B as well. What we were getting from Knock2 was so much better.”
Jeremy Steinbring
CEO & Founder, RevOnyx
Customer interview
“It was 2,500 people on RB2B and 3,500 people on Knock2.”
Tom Bonagura
GTM Engineer, Air
LinkedIn post
“In a split test with RB2B, Knock2's super pixel consistently pulls 25% more de-anonymized website viewers, and always higher quality.”
Alex Hively
Director of Marketing, Confirm
Comparing tools? Knock2 vs RB2B →
What revenue leaders say about Knock2
Trusted by GTM teams everywhere
100x better than RB2B and the platforms I've seen in the past.
Jeremy Steinbring
CEO & Founder · RevOnyx
I was blown away with your tool… I hooked it up and within 45 minutes we booked a meeting.
Rodrigo Diaz de Rivera
VP Sales & Marketing · OrderEase
Knock2 has transformed our outbound sales motion. It embeds insights directly into our workflow.
Fionn Hart
Head of Sales · Cuedesk
One of the fastest and most useful lead tools I've ever used. I could instantly see who was on my site.
Tim Yakubson
Founder · B2B Boosted
I integrated it yesterday and setup was extremely easy. I also love the flexibility.
Jemel Fanfan
GTM Engineer · Flint
FAQ
Frequently asked questions
How is the 93% match rate measured?
The 93% figure refers to account-level identification, meaning Knock2 can tell you which company a visitor is from 93% of the time. It's measured against "engaged sessions," which Google Analytics defines as any visit that lasts 10 seconds or longer, or includes 2 or more pageviews.
The 62% figure is for person-level identification (name, email, title) on US traffic, measured the same way. We publish both numbers because they answer different questions: which companies are on my site, and which individuals can I reach out to.
How does Knock2 identify visitors on my site?
Knock2 uses a lightweight website pixel and a proprietary waterfall identification process to match site activity with relevant contact and company data.
The specific identification methods used may vary based on factors such as the visitor's location, available signals, data coverage, and applicable privacy requirements. Knock2 can identify companies globally, while contact-level identification is currently focused on eligible visitors in the United States.
When a match is available, Knock2 combines the identification result with business data and on-site behavior to help your team understand who is visiting, what they are interested in, and which visitors may be most relevant.
What's the difference between device-level and IP-level identification?
IP-level identification uses a visitor's network information to associate website activity with a company or organization. This is generally used for account-level identification and may represent multiple people visiting from the same business. Device-level identification uses signals associated with a specific browser or device to support more precise visitor matching.
What's the difference between account-level and person-level identification?
Account-level identification tells you which company a visitor is from. Person-level identification tells you exactly who the individual is: name, title, work email, phone, and LinkedIn profile. Person-level data is only available for US traffic due to privacy regulations in other regions. Most teams use both: account-level coverage for breadth, person-level for direct outreach.
How real-time is the data?
Account-level data (the company behind a visitor) typically appears in the dashboard within seconds of the visit. Person-level data (the individual, with contact details) takes a bit longer, usually minutes to a couple of hours, because resolving an individual runs through additional matching steps.
For most use cases (Slack alerts, outbound sequences, CRM enrichment), that latency is well within the window where the recency still matters.
Is this actually legal?
Yes. Knock2 is built on the same class of identity and analytics technology already running on most B2B websites.
Person-level identification runs on US traffic only, by design. Everywhere else, Knock2 returns company-level information only. That is how it stays within GDPR, CCPA and ePrivacy expectations. The identity data itself is licensed from established data providers.
Does Knock2 work outside the US? What about GDPR?
Person-level identification is limited to US traffic by design, to stay compliant with GDPR, CCPA, and the ePrivacy Directive in Europe. Account-level identification works globally.
What is website visitor identification?
Website visitor identification matches an anonymous session to a company, and on US traffic to a person. Knock2 identifies 93% of engaged sessions at the account level and 62% of US engaged sessions at the person level. An engaged session is 10 seconds or longer, or 2 or more pageviews. Google Analytics still measures the visit. Identification names who it was.
Is Knock2 the same company as Knock AI?
No. Knock2 is knock2.ai, website visitor identification for B2B teams. Knock AI at knock-ai.com is a different company. Check the domain before comparing match rates or pricing.
Where can I compare website visitor identification software?
The 2026 comparison of Knock2, RB2B, Warmly, Leadfeeder, Snitcher, Vector, and Lead Forensics is best website visitor identification software. It separates person-level identification from company-level identification, and it leaves a cell blank when Knock2 has not published that vendor's number.
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