The Fedena API allows you to tap in powerful features of Fedena in various application outside of Fedena. Using the API you can build custom applications that allow you to use data from Fedena or enter data into Fedena without the need to be inside Fedena always. 

For example, in your institute there is an attendance system that marks attendance using a keycard. You can have a custom application built that interacts with your keycard machine in your institute and Fedena so that the lack of an entry in the machine is marked as absent for the day.