Play Framework does not provide a facility for generating access logs, so you cannot monitor user activity. If Play is front-ended with nginx or Apache httpd, the generated logs by the front end process does not contain user ids, which makes it difficult to track user activity. play-access-logger solves these problems. This project is sponsored by Micronautics Research Corporation, the company that delivers online Scala and Play training via ScalaCourses.com. You can learn exactly how this filter works by taking the Introduction to Scala, Intermediate Scala and Introduction to Play courses.