QR Code scanners are devices that can read and interpret two-dimensional barcodes or QR codes. They use a sensor to capture the image of the code and then decode the information contained within it. QR Code scanners are widely used in various industries such as retail, healthcare, and logistics to improve accuracy and efficiency in tasks like inventory management, patient identification, and package tracking. Compared to traditional 1D scanners, QR code scanners can store more information and can be read from any angle, making them more versatile and useful in a wide range of applications.