This Application can be a very useful if you download from the android market. The application allows users to scan any type of barcode using the camera on your device. So if you want to download an android applications online you simply use the Barcode Scanner to scan the application's QR barcode and the Barcode Scanner will automatically bring up the download link for that specific QR barcode. You can also scan any item with a barcode for example if you scan a pack of batteries the application can search for this on Google to try and find more information on that item. Why don't you try using Barcode Scanner to scan some of the QR Codes on this blog. Please comment if you need any help and share your thoughts on this useful app.