Scan is a very fast and simple barcode & QR code scanner. All you should do is, starting this app and taking an image of barcode or QR code.
After the QR Code was invented in Japan by the Toyota in 1994 to track vehicles during the manufacturing process, it becomes very common in consumer advertising and packaging because the popularity of smart phones *. So, QR codes technology made it easy to reach the contents that we are interested in. If the code contains a web site URL, you automatically directed to that site or if the code codes contains other formats like contact info or text, this app will take the right action.
As an additional feature, it keeps the scan history of your past searches. Also you can sync this history across web if you logged in to your Scan.me account.
It requires not so much things. You can use it whenever you want if your device has a built-in camera and there is an internet connection.