Ok. I saw The Randomizer today at FLL. It is an iPad running the app. The app has blue screen and it actually says TSA Randomizer on it. The iPad is installed in between the Pre and regular lanes. The TSA clerk first asks how many people are traveling together and then touches the screen. The iPad the shows a big white arrow pointing to either lane. There were also like 5 other TSA clerks of different caliber standing around and telling people what to do.