“Originality reports” generated by a TMS do not exclude properly cited quotations, nor does a TMS detect plagiarism other than the verbatim cut-and-paste variety. Different TMS are designed for different types of work (written work, computer code, etc.). It is important to choose one that works for your area.
There is diminishing value in the larger scale TMS databases. Students are much more likely to copy from their friends or hand in a paper submitted for another section of the course or a previous year than to use a paper generated at another university or in another country.
There are those that believe the use of a TMS creates a climate in which students are guilty until proven innocent. This could act to undermine the teacher/student relationship, which we know to be of prime importance both in learning and in the promotion of academic integrity. There is little evidence to show that using a TMS acts as a deterrent to plagiarism. Other recognized methods of promoting academic integrity and discouraging cheating should continue to be used.