title: Universal analytics bigquery export: retrieving fullVisitorId from _ga cookie
body: <p>Does anyone know how to build the fullVisitorId available in BigQuery export (premium account) from _ga cookie? If this is not possible, do you know how to get the user fullVisitorId in js?</p>
  
  <p>Many thanks,</p>
  
  <p>Quentin</p>