How to add an electronic discount card (qr code, barcode) to the personal account of a Woocommerce user?

Question

QR codes

Who will tell you how to add an individual discount card to the personal account of a Woocommerce online store user? Maybe there are ready-made solutions (plugins for example)?
The essence of the idea: to make an application out of IM Woocommerce Webview and replace plastic discount cards with electronic ones. During registration, each user must be assigned a qr code or barcode and stored in the user's personal account. When making purchases in an offline store, the user shows the qr code or barcode to the seller to scan and provide a discount. Of course, it is desirable that this map code be changed periodically (to avoid simply using a screenshot of the map)