A plagiarism prevention tool, Turnitin instantly identifies papers containing unoriginal material. Turnitin’s comprehensive plagiarism prevention system allows instructors to quickly and effectively check all of their students’ work in a fraction of the time necessary to scan a few suspect papers using a search engine. Every paper submitted is returned in the form of a customized Originality Report. Results are based on exhaustive searches of billions of pages from both current and archived instances of the internet, millions of student papers previously submitted to Turnitin, and commercial databases of journal articles and periodicals.