...
Many event organizers will wish to review the RSVPs for a particular event. The uses might be the same as the graphic designers, or they may be other users. These users may be using a desktop/laptop or smarthphonesmartphone. A user may use a desktop several days before an event, but a smartphone the day of the event.
The people viewing RSVPs might have received formal instruction in the system, but they probably have not. Since the users might not have been the ones who initially created the barcode, we can not rely on the learning from the other part of the system.
If the person is viewing RSVPs on their smartphone the day of the event, the user may only have a few seconds to see the count of the event. On the other hand, a user who is viewing the RSVPs on a desktop might be interested in detailed statistics on how and when users RSVPed.