Why smart card and RF card redirection by View server unable to use?

Since View sever filters smart card and radio frequency card. Only View smart card can be redirection its own smart card and RF card, forbid other smart card and RF card（including SEP redirection smart card and RF card.）Presently, View solution unable completely turn off through configuration. So for this problem ,only way is to delete registry to turn off this function and make sure use smart card and RF card redirected by SEP works.