QR scanner app is a mobile application that allows users to scan QR codes using the camera on their smartphone or tablet. QR codes are two-dimensional barcodes that can contain a variety of information, such as website URLs, contact information, product details, and more. By scanning a QR code with a scanning app, users can quickly access the information contained within the code without having to manually enter it.
QR scanner apps typically use the camera on a mobile device to capture the QR code image, and then decode the information within the code. Some scanning apps also allow users to create their own QR codes for sharing information with others. Additionally, some apps may offer features such as saving scanned codes for later use, or automatically opening a web page or app related to the information contained within the QR code.
Overall, QR scanner apps are a convenient and efficient way to access information quickly and easily using a mobile device.