Well, here's how you do it:

❶⠀Go to BT Pay - yes, you must have the app installed in your phone 😁

If you don't have BT Pay, you can download the app for free from Google Play. App Store or Huawei AppGallery. 

❷⠀Apply for your shopping card by following the steps in the app and you get your card;

It all takes about 10 minutes and you sign all the documents electronically.

❸⠀The digital card is issued to you instantly. You add it to the app and you can already use it for online payments, payments in shops, cash withdrawals from BT ATMs and more.