Custom services provided by PocketWizard.
Custom IDs: A Custom ID (CID) is a private digital code programmed into a Plus III, Plus IV, FlexTT5 or MutiMAX radio which can only be triggered by the owner of the radio. This premium service is offered exclusively by PocketWizard. In hyper-crowded shooting environments, Custom IDs give photographers the confidence to know that their remote flash or remote camera can only be triggered by them and no other photographer. To learn more, visit wiki.pocketwizard.com/customids.