First you have multiple simultaneous classes or meetings. Second you must validate who’s at each class/meeting. Third, confirming who attended is important for certification, parental reports, etc. Next you know using a kiosk for each class or meeting is easy. However classes are small, to save money you want one kiosk for all classes/meetings. https://cloud-in-hand.com/multi-class-check-in-kiosk-one-kiosk-for-everyone/