If you've flown recently, you may have seen a TSA agent holding a tablet that pops up an arrow that tells you which line you should stand in. That little app is called a "Randomizer" and TSA agents use it to determine who is subject to the random searches that are a part of the TSA Pre-check program. Here’s a video of it in action: . . . You wouldn't know it, because it looks incredibly simple, but it appears that the Transportation Security Administration (TSA) paid IBM $47,400 for the app, part of a larger $336,000 payout. IBM has...