Given the prevalence of traffic cameras and toll plaza cameras, license plate recognition (LPR) may seem pretty straightforward: take a picture of a car, analyze it with software to determine the plate number, then compare that number against a database or store it for later forensic use. However, as is the case with any technology, the devil’s in the details. And in the LPR world, if any one of those details isn’t just right, the results can be downright useless.