A student brought it to my attention that there were answers written on his desk in pencil for a recent vocabulary quiz I issued. The cheating method is rather dated but also one that students can easily get away with because pencil blends in with the color of the desk and is impossible to see unless viewed up close. I believe I know which student it is because I have assigned seating and will address the problem tomorrow. However, does anyone have any suggestions on how to combat this? I was thinking somewhere along the lines of assigning students different seats when taking exams, but fear that would be a problem because students tend to take forever to get settled down when they change seats. Any help would be appreciated.