You need to create QR codes before you can assess your pupils with the LanguageScreen app. A QR code is short for "Quick Response" code. It is a square black-and-white symbol that people can scan, using a smart device with a camera. The squares are encrypted to hold information. In this case, the information that they hold are the unique codes that we assign to each child. This means that each child’s assessment is fully anonymised. The QR codes also save school staff from having to enter each child’s details every time they need to conduct an assessment.