The Wall Street Journal says that GS1 US, a non-profit that units requirements for worldwide commerce and commerce, provides UPC codes to merchandise. This implies that a product purchased at Wal-Mart or one other retailer would have the identical UPC code irrespective of the place it was purchased. You can lookup UPC codes online at websites like UPC Database or scan them with apps like Barcode Scanner, which you will get from iTunes or Google Play. UPC codes have between 8 and 13 numbers.
As of 2015, Wal-Mart makes use of EPCs, or digital product codes, that are just like the bar code’s subsequent era. Wal-corporate Mart’s website says that EPCs work the identical method as UPCs, however in addition they work by way of radio-frequency identification, or RFID.