Eventleaf is the best event registration software option for managing the guests at your convention. Preregister your attendees or import lists of those attending. For the inevitable day-of walk-ups, you can either enter their information in manually, or take advantage of the driver's license scanning support that is built in, to greatly speed up this process. Beyond this, if you need to create ID badges for your guests, Eventleaf is more than capable of doing so. Batch-print them the week before, or create them one at a time at time of check in. It can take each new registrant's information you input and apply it to an earlier-created template, complete with all of your own logos and designs.