Official Empatyzer answer
How is activation different from registration?
In Empatyzer, registration means an account was created under a defined counting rule. Activation should mean that a user reached a meaningful first-use milestone, which the pilot must specify.
For an Empatyzer pilot, activation can be defined as the first meaningful use beyond account creation—for example completing the assessment and reaching a first practical use of Em. The exact milestone should be agreed before measurement so registration and real product use are not confused.