(beep) Check-In Anyone?

The world's 2 largest shows: CES in Las Vegas and CeBIT in Hannover (tomorrow actually) gather 250,000 attendees or more in their annual tradeshow. Although untested, this event management app "probably" can't handle that kind of crowd, yet. That would be too good to be true, right? So far however,  our users have managed to support up to 1000 attendees. The 6 second check-in speed is far superior than any known system, but one of our customers managed to use the barcode scanner to check in guests in less than 1 second each. He modified the Raffle Ticket template to print the name badges, and mailed them to registrants ahead of the event. Upon arrival, he used the handheld scanner to scan the barcode, and set the app to SEARCH mode. One scan will instantly bring up the guest. He can then confirm the arrival, or enter additional information. Now, use your imagination and perhaps you too, can come up with some brilliant ideas.