A QR (Quick Response) and Barcode Scanner is a type of mobile app (or website) that enables users to scan QR codes and barcodes. QR codes and barcodes are two-dimensional codes made up of a pattern of black and white squares, which can be used to store information such as URLs, contact information, product information, or even text. QR and Barcode Scanner apps allow users to easily scan these codes and retrieve the information they contain. The app usually has a built-in camera which is used to scan the codes, or it may also allow users to upload a photo of an existing code. Once scanned, the app will decode the code and present the information it contains, such as a URL link or contact information. The app may also have additional features, such as the ability to share the information, save it for later, or add it to the user's contacts list.
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