I like this idea, however I have two concerns. When I'm doing the test I tend to want to be lazy and am okay if I highlight and extra word or two I didn’t intent to highlight because the highlight system is finicky and time consuming to fight. So I might not always highlight the first 2 letters or full word precisely as this system intends. I suspect this would be difficult for a detection software to detect. My other concern is that I sometimes like to use the highlight function on answer choices to remind myself of key words I may be comparing between answer choices or the stimuli. If the word I want to highlight is at the beginning, it may be wrongfully tagged as an elimination.