Most B2B buyers do their research quietly. They read your service pages, look at your work, and compare you with others long before they fill in a form, and many never fill one in at all. Website visitor identification tries to tell you which organizations are behind those anonymous visits, so sales and marketing can respond while the interest is real.

Used well, it is a useful signal. Used carelessly, it misleads your sales team and creates privacy risk. This guide covers both sides.

How it works

Most tools identify companies, not people. When someone visits your site, their connection has an IP address. Identification services keep databases that map ranges of IP addresses to the organizations that use them, so a visit from a company’s office network can be matched to that company.

  • It works best for office networks. Larger organizations often route their traffic through addresses registered to them, which match cleanly.
  • It works poorly for everyone else. Home broadband, mobile networks, VPNs, and coworking spaces resolve to the internet provider or to nothing useful. With so much research now done from home, a meaningful share of your visitors will never match.
  • Enrichment adds context. Once a company is matched, tools add details such as industry, size, and location, and sometimes suggest contacts who work there. Those contacts are people at the company, not necessarily the person who visited.

Some tools, mostly in the U.S., go further and claim to name individual visitors by matching them against third-party identity data. That raises serious privacy and legal questions, so treat it with caution and involve your counsel before using it.

What it can and can’t tell you

It can tell you:

  • that someone at a matched organization visited, which pages they viewed, and how often they came back;
  • which target accounts are showing interest this week;
  • which topics and services draw the companies you want to reach.

It can’t tell you:

  • who the visitor was, in most cases;
  • whether the visit was a buyer, a job seeker, a student, or a competitor;
  • anything about the many visits that do not match at all.

Privacy and the law

Visitor identification runs on data about people’s visits, so it sits inside privacy law, not outside it.

  • Europe and the UK: IP addresses can be personal data under the GDPR. You need a lawful basis for processing them, and the tracking scripts involved generally need consent.
  • United States: state privacy laws, led by California’s, require you to disclose the data you collect and how it is shared, and can give visitors the right to opt out. California requires businesses to honor the Global Privacy Control signal sent by browsers.
  • In practice: say in your privacy policy that you use visitor identification, put a data processing agreement in place with the vendor, and never use it to infer sensitive information about anyone.

This is general guidance, not legal advice. Check the specifics with your counsel for the markets you sell into.

Putting the signal to work

  1. Filter to your ideal customers. Most matched companies will not fit your market. Set rules for industry, size, and region so only relevant accounts reach anyone.
  2. Score the interest. A single visit to a blog post means little. Repeat visits, visits from several people at one company, and time on service or pricing pages mean more. Fold these into your lead scoring.
  3. Route it with context. Send qualified accounts to the right owner in your CRM, with the pages viewed, so a salesperson knows what the company cares about.
  4. Reach out on the topic, not the visit. Lead with something useful about the problem they were researching. Telling a prospect you watched them browse your site rarely goes well.
  5. Measure it like any channel. Track meetings and pipeline from identified accounts, along with match rate and false positives, and decide from results whether it earns its cost.

Choosing a tool

Options range from dedicated tools such as Dealfront (formerly Leadfeeder) and HubSpot’s Breeze Intelligence (formerly Clearbit) to account-based marketing platforms such as 6sense and Demandbase. Rather than picking from a ranking, test them against your own traffic:

  • What share of your real visits does it match during a trial, and how many matches are wrong?
  • Where is the data processed and stored, and what does the vendor provide for GDPR and U.S. state laws?
  • Does it connect cleanly to your CRM and marketing automation?
  • Where does its contact data come from?
  • How is it priced: per site, per identified company, or per seat?

Where we come in

We set up visitor identification as a focused engagement or as part of a wider digital marketing program, and connect it to your CRM through marketing automation so the signal reaches sales with context. Tell us what you sell and to whom, and we will tell you whether it is likely to pay off for your traffic.