I'll go first. I made a prototype/proof of concept tool that could detect if multiple authors had contributed to a project dissertation that should have been wr

I'll go first. I made a prototype/proof of concept tool that could detect if multiple authors had contributed to a project dissertation that should have been written by a single author. I got the idea when I met a final year student who was far off from finishing his project with just a few days to go. He explained to me that someone else (a friend) was writing about four chapters of his dissertation for him. Even if lecturers read and realised the obvious stylistic differences between the chapters written by the student and those written by his friend, a simple "gut feeling" would not suffice as proof to accuse said student of plagiarism. Thus I built a tool that would statistically analyse the writing styles of the students and spit out a probability/certainty report that said which chapters were almost certainly written by someone else. It worked at a very basic level for long form texts. I never ended up making it an actual product simply because I've lacked the time and determination to collect and organise (especially organise) the material required to train a system into being a real usable product. I had big dreams for it, including usage in forensics and courts of law (answer to the question of was the witness/accused/victim forced to write the letter? Did the witness/accused/victim actually write it him/herself.. etc).. Ah well. Someday maybe.