I'm going full Luddite in my classes next year. Zero-tolerance policy for laptops, phones, etc. I don't want to have to do a blue book exam but that may end up being what happens.

I don't blame you. How about having them get the large format blue book and they use it all semester for quizzes, discussion questions, etc. and you keep control of the books. Remember, the Luddites were right all along. The Industrial Revolution did destroy their way of life.