BarCode Scanner for Android is available for FREE on Google Play.
Description of BarCode Scanner for Android
Barcode scanner is a great app that allows you to scan barcodes on the products you want and then see a list of prices for the product and reviews about it. Other data that can be scanned are Data Matrix, QR codes with URLs and so on. You can share date using QR codes also using the app. That explains why the app needs contact permission.
Free Download BarCode Scanner for Android from Google Play.