well... i tried it today at pizza hut ( got 30% discount mah) hehhe.... the first 3 tries.. could not go in...it showed error... once got into the system, it was very smooth... but weirdly.. after everythin was done.. the lady asked me to sign on her copy... i was like wat!!? would it make any different if i were to sign or not.. the money has already been debited frm my card leh... heheh