Anti-Cheating Crusader Vexes Some Professors

Software kingpin says using his product would cure plagiarism blight

John Barrie probably doesn't have many fans at Princeton University. It's easy to understand why.

About two years ago, Princeton officials announced that they had no intention of using Turnitin, the popular antiplagiarism software sold by Mr. Barrie's company, iParadigms LLC. When an enterprising reporter at the student newspaper called the company's founder to ask for a comment, Mr. Barrie obliged: He called