How do I use my membership card in store?

You have two options:

1) Click the "Membership Card" icon in the watch application list to enter the membership card list, click on the membership card to be used, and point the scanner at the QR code/barcode of the membership card on the watch;

2) Open Zepp > Profile > Amazfit T-Rex 3 > Membership Card, enter the membership card page, click on the membership card to be used, and point the scanner at the QR code/barcode of the membership card on the watch.