Ouriginal (formerly Urkund) is a text-recognition system that looks for similarities between a submitted document and external sources. The system is available in Lisam and it is possible to connect Ouriginal to the submission module in a Lisam virtual course room. As a teacher at LiU, you have the option to have an account for Ouriginal, which can be provided by the library.
When a text written by a student is sent to Ouriginal, the document is checked against three main sources: the Internet, published material (excluding some publications because of commercial copyright reasons) and works by students. If the document shows similarities with content from these sources, the system will indicate these similarities. The analysis is presented in a report that is sent to the teacher that requested the analysis, who then makes the judgement if there are grounds to suspect plagiarism.
More information about Ouriginal is available at Ouriginal's website