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Tap the Google Play Store app icon, which resembles a triangle on a white background. As you type, search results will filter below. It should be the top item in the drop-down menu if you spelling it correctly. Tapping it takes you to the Barcode Scanner Pro page. This is the green button on the far-right side of the page under the app's title. This installs Barcode Scanner Pro on your phone. Allow a few moments for the installation to finish. Once finished installing, a green "Open" button will appear. Tap it to launch the app. For the item that you want to scan, locate the barcode on the item or its packaging. You'll see a box in the middle of the Barcode Scanner Pro screen; center your item's barcode in the box to prompt it to scan. Once lined up and in focus, the barcode will scan almost instantly. You should see a list (if applicable) of matching item results after the barcode scans. You can tap Product Search or Web Search to search the web for matching results.
Open your Android's Google Play Store. Tap the search bar at the top and type barcode scanner pro. Tap Barcode Scanner Pro. Tap INSTALL and then ACCEPT. Tap OPEN. Find your item's barcode. Center the barcode in the scanner's frame. Review the barcode's results.