{
  "rules": {
    ".read": "(auth.token.email == 'mybuddy@gmail.com' || auth.token.email == 'anotherfriend@gmail.com')",
    ".write": "(auth.token.email == 'mybuddy@gmail.com' || auth.token.email == 'anotherfriend@gmail.com')"
  }
}

service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write: if isWhiteListedUser();
    }
  }

  function isWhiteListedUser () {
    return request.auth.token.email == 'mybuddy@gmail.com'
    || request.auth.token.email == 'anotherfriend@gmail.com';
  }
}