How to Identify Anonymous Website Visitors: 7 Methods Ranked [2026]
About 98% of your B2B website traffic leaves without filling out a form. Someone read your pricing page for four minutes yesterday, compared you against two competitors, and vanished. Your analytics logged them as "1 session, Austin, TX."
There are exactly seven ways to figure out who that was. Some resolve the company. A couple resolve the actual person. Most vendors selling these methods inflate their numbers badly — we've independently tested 12 identification platforms and found person-level match rates of 8-41% against advertised claims of 80%+.
This post ranks all seven methods by what they actually deliver in 2026: realistic match rate, cost, and legal exposure. If you want the full technology deep dive first, start with our complete guide to B2B website visitor identification. This one is about picking a method and shipping it.