I've been hearing a lot lately from vendors about "registration kiosks." These are computers or kiosks set up in a meeting registration area to allow self-check-in for meeting registrants. The concept is similar to what you see at the airport now when you go to check in: the meeting attendee goes to the kiosk, slides a credit card to identify him- or herself, and then walks through the process of checking in.
I've actually used this check-in process at the Avectra Users and Developers Conference (although I needed someone to help me check in). I know that ARC Solutions is also offering this type of service. At ASAE's Annual Meeting, they do a similar thing with "wandering registrars" who carry barcode scanners and can check you in without you having to stand in line.
I'm curious to hear stories (success or failure) on this concept. Have you ever used registration kiosks at your conference? Or have you ever attended a conference that had registration kiosks? What has been the big advantage or serious impediment?