This feature only works in the experimental version participant_counter2.php
+
+
https://www.socsci.ru.nl/wilberth/nocms/radcloud/participant_counter.php?experiment=1&timeout=10&url=http://www.nu.nl #forward to http://www.nu.nl?ppn=COUNTER
+
= Adding a participant identifier from the panel system =
= Adding a participant identifier from the panel system =