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on 23 August 2017
Very interesting
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on 31 July 2016
a little old for my 10 year old but next year i think it will be great
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on 6 March 2014
Love this kind of book and love codes. Found it very easy to understand. I also enjoyed learning about the history behind all the codes.
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on 3 July 1999
Very well written. This book offers an introduction to "crypto-stuff" such as mono/polyalphabetic substitutions and grille methods. It doesn't go into much of anything else in huge detail, but it offers many methods including "how to build" your own encoding/decoding tools. If you're looking for some fun reading, I highly recommend it. If you're serious about learning though, check out "the code breakers" by kahn.
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on 5 February 1999
This is a fascinating introductory book about codes and ciphers. It is very readable and understandable for young adults and older. Anyone who is interested in codes and ciphers will like, and want to own this book.
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on 1 February 2014
bought to help me do my final year project. has been a good read and will be reading again in the future!
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on 29 January 2016
Great book! I'm teaching criptography at High School and this book is perfect for students.
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on 28 December 2015
bought this for memories
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