To use a barcode scanner on a smartphone, download and install a barcode scanner app from your smartphone's application store, open the scanner app, click the search button, align the barcode horizontally, and confirm that it is focused on the screen. After scanning, some apps show a clickable button to start a product search, while others automatically start the search.
To download the barcode scanner, click on the Search button in the application store, type in "barcode," and hit Search. The store displays a list of barcode scanners. Click on any of the displayed apps, and hit Install.
Barcode scanners are generally used to scan barcodes to get information on a product. Some apps allow users to scan a barcode and store the name of the product and its details in a list, and a few of them can directly store barcode information onto a spreadsheet. Most barcode scanner apps also scan QR codes. Scanner apps that are specialized for consumers let users find information quickly on the item, such as where to purchase it and the current lowest price.
As of 2015, some of the most used barcode scanners for iOS and Android are MobileAsset, Scan 2.0, Entry Manager and RedLaser.