[gumby]

This essay is most about culture, but it does mention an anti-plagiarism program (which sounds pretty hard to do except in very trivial cases, but who knows?)

There's another tool: the repo. My son was accused of plagiarism in his last year of high school. It could have been a "he said/he said" case -- in fact it started that way -- until I pointed out that if he believed he was in the right he had a record that could be checked.

The CS teacher had to explain to the principal why the repo proved who had copied whom (and left me wondering why the teacher hadn't looked there first????) which wasn't easy because the plagiarist's parents were big donors to the school. So in the end, despite what it says in the school handbook, the only penalty was a 0 on the assignment.

But a good lesson for my kid on both programming and the sociopathologies of organizations.