The Add Scan Window is displayed when you are scanning a new identification into the system, either for a student or a product item.
When scanning a new item, Martial Class requires that you scan it more than once. This is in order to reduce the number of mis-scans and increase accuracy.
Generally, when using a good quality barcode or clean magnetic strip with a good quality scanner, you will only need to scan the item twice to achieve a good accuracy.
If the scanner has trouble scanning the item, you will need to scan more than two times so Martial Class will be able to determine the correct information to store for matching.