Keith L, Bookseller
So this one is a classic book I’d never heard of. Admittedly, I didn’t read it cover to cover, but I got the idea. It certainly deserves a reprint. I think people will have some fun with it. Some of the codes are a bit confusing until you really focus, I think there are some people who will hyperfocus on the various codes and work with them. There will be some who will abandon them pretty quickly. I have customers who will buy this for their brilliant grandchildren, but we’ll have to see if it gets use or gets stuck on the shelf never to be seen again. Using letter switching or grilles and more, there really are a lot of ways to send secret messages.