How to use me to check with a nearby supermarket or merchant parity

1, first of all, download the latest version of my check, installation opened, direct click directly below the "scan";

2, alignment to the commodity bar code (PS: Barcode scanning support one-dimensional EAN code, QR code (two-dimensional code), two-dimensional WEPC code and express number (CODE128 code), if it is a supermarket merchandise, will display the local information in the upper right corner, the middle show the price of the major supermarkets;

3, if is the net buys the commodity, will show each big mall the contrast price.