@sam suitsignon is for accessing external application through Netsuite interface. Token based authentication is same. Long ago(2008) I did create a Netsuite based authentication for Joomla and Drupal CMS and ported the customer centre there, customers can login using their NS credentials to those websites and access the customer portal. I used Netsuite's PHP toolkit and NuSOAP for this, now a days you should be able to use Restlets and JASON to achieve the same. Note -I did publish that in the official User forum and Netsuite banned me for doing so 😞 because my customer portal looked slicker than their's