There are two ways:
1. You need to be nominated by a friend or family member who is employed by Google. After you’re nominated, you’ll get an invitation email from comms-testing-noreply@google.com with the subject “You’re invited to start testing software from Google.” The email will include next steps and a link to register with the program.
2. We recruit participants at Google sponsored events or as an exhibitor, we will have a user registration link for participants to sign-up to become trusted testers. If you would like to become a Trusted Tester, email us at comms-testing@google.com and include the subject "I'm very interested in becoming a Google Trusted Tester"