In addition, this is also an IC credit card with an IC chip. This kind of chip can encrypt the data in the card, which is unrepeatable and can prevent 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.
If the landlord has other questions, you can ask.