Cardholders need to download the "Discover Wonderful" mobile APP and open it. Click "My" to enter the "Personal Center", find "Card Activation" in the card service, and click to enter the card activation page. Click "Enable card swiping" and scan the card number on the credit card to enable the card swiping function. Click "Card Activation" again and the word "Inactive" will appear, indicating that the card swiping function has been successfully activated and you can swipe your card offline.