Earlier quoted context omitted.
Instead of engaging in a technological arms race perhaps the solution is to give more emphasise to writing in class: Make the pupils read, study, etc. then they get x hours in class to write their paper with only pen and paper allowed. You can also do both and then compare. If what's produced at home is very different from what's produced in class...
But haven’t we solved this in the quant side? Let them cheat all they want then fail the midterm, which has proctors watching like hawks. (Or if you can assemble a formula sheet and pull a b after copying answers from the back of the textbook then you earned it)
To date, writing has evaded this trap. Sure, students write short essays during timed exams, but they also wrestle with more complex ideas and topics in longer assignments. Those assignments often take days, or even weeks, to do well.
I’m not sure what the future of those longer assignments is. I’m a bit disturbed by the idea that reading widely, thinking deeply, and distilling a few pages of coherent thoughts may not be an important part of early education. (Schools don’t always teach this well today, but at least we expect them to try.)