Privacy Friendly Analytics is a glorified hit-counter - it's designed to capture details that are useful for improving delivery without capturing user-specific information.
The original design/rationale can be found in the post Designing Privacy Friendly Analytics
Version 0.4 improves user privacy where session IDs are enabled
- Improve/fix referrer check during enhanced collection
- Set a max lifetime of 3 views for session IDs (#16)
- Introduce a 1:3 chance of session IDs rotating for any given pageview (#17)