The client approached me in 2014 about creating an application that would track usage, warranty information, and certification details on their medical products. They manufacture and recertify blood pressure cuffs and related equipment for medical use and needed a way to quickly process their products. All of their items contains a unique barcode so we used a barcode scanner attached to a Windows PC for the interface. The employees scan the barcode of new of returned items and the system automatically processed them according to that individual item's history. The application was written in C# and used an SQL database to store the information.