After Google Encrypts Search and Introduces <not provided> Acronym Provides a Solution.

Acronym has developed a patented algorithm to recreate your keywords with near perfect accuracy. The Keyword Provided Algorithm (KPA) maps each keyword “not provided” visit to one of thousands of visitor profiles that are customized to your site using such factors as geography, buying patterns, unencrypted keywords, URLs visited and much more. The profiles are created from multi-dimensional web analytics integration and proprietary mapping technology that translates into user intent.

The outcome brings back your keywords matched with visits and conversions. Specifically, in a testing environment Acronym was able to “back-test” and produce results that are 100% comprehensive and 99% accurate.

You can view the patent here: https://patents.google.com/patent/US20150127635A1