The issue focused on one of those features, the ability to use the device's built-in camera to scan QR codes for items, such as food, medicine or even a phone number.

The app uses QR codes to send a QR code to your phone to scan the QR code, and then the app displays a list of available items. When you click the item you want, the app displays that item at the correct price for your currency.

This is a feature that Apple had originally planned to