1, basically, the investment in machine brushing has points, but the merchants who hacked some machines definitely didn't brush the points of this part of the merchants. If they brush this for a long time, there is also a risk of risk reduction. It is best to choose some machines that have not been hacked by merchants.

2. Whether there are points depends mainly on two aspects: first, the rate grade of POS machines installed in consumer places; Second, please ask the issuing bank first whether the card type you hold generates points.

3. Generally, POS machines in supermarkets have points, and whether there are points is determined by POS machines. Sometimes it is determined by the card, because some cards have no points for any POS machine. Banks that issue credit cards will generally tell you the credit limit, billing date, repayment date, points method and other information when issuing cards.