In terms of rights and interests, the gold card is an IC chip credit card, which can encrypt the data in the card and has the characteristics of non-duplication, preventing the card from being copied and stolen. In addition to the original credit card payment method, the landlord can pay by inserting a card in the merchant indicated by "UPCash" or directly paying by swiping the card in the merchant that supports "Express Pay". These two payment methods do not need to verify passwords and signatures, so they are very convenient to use.