Barcode scanning apps let you scan a barcode (either EAN-13 or UPC), and it searches the internet (on leading database sites such BarcodesDatabase.org, Gepir.org, Amazon.com, UPCdatabase.org and various others) and then returns product information for that particular barcode. It’s a quick, easy and precise way to get information about a product purely from the barcode. These apps are easily downloadable onto your smartphone.