# Join a Project
Join Projects to contribute measurements and receive notifications when new posts are made to the discussion.
# Browser
When you visit the Project page, click on Join in the left menu bar.
# Android
When you visit a new Project click on Join.
# Desktop
When you click on a new Project click on Join in the right menu bar.
Tip
Some Projects cannot be joined, since they are limited to a closed group of users (indicated by the lock icon). If you are interested in joining, ask for an invitation as a collaborator.