After scanning a QR code/barcode, information and actions based on the data contained in the code will be displayed automatically.For example, you can display a discount coupon by scanning the QR code on a coupon, or you can check the price of or see buyers' comments about a product by scanning its barcode.It is a very useful app for those who want to save money on online shopping or find great deals. The QR code version can read up to 40.In addition, you can scan left / right inversion, black