E-receipt / Receipt

We have all kinds of receipts after consuming,especially in supermarkets.Traditional receipts waste lots of paper,and are difficult to keep as an account.
E-receipt is a redesignd receipt use QR code instead of texts.This new receipt uses less paper and is safe for privacy. What's important,E-receipt can be easily scanned by mobile devices,then,we can save the contents as our consuming bills,or send them to personal computers.E-receipt help build our good consumption habits.