At the same time, if the landlord needs to use it again in the future, it is ok to open it within the validity period of the card (the validity period of the card is on the front of the card, at the lower right of the card number, with four numbers, one of which is in the form of "month/year". For example, if it is written as 12/ 18, it means that it is stuck at 18. After the expiration date, the card will be invalid, and you will not be replaced if you don't open the bank. )
If the landlord feels that there are too many cards in his hand at present, it is inconvenient, even if the cards are not activated, he can call his home service hotline to cancel the card return.