My university had an interesting solution for a couple of modules for computer science - there were six programming assignments spread throughout the term, and

My university had an interesting solution for a couple of modules for computer science - there were six programming assignments spread throughout the term, and you do them at home and submitted online. It'd be (obviously) very easy to cheat, and being programming a certain degree of similarity would be expected. However, for the final assignment, you had to go for a viva. You had to explain how it worked and why you'd chosen to do things in a certain way, and that formed the bulk of your assessment.