Can you crack passcodes, open cryptic files, and find information hidden in computer code before you are discovered? Tech Decoder Puzzles will keep kids entertained for hours!

 Series: A spectacular series of four books, developed by Dr Gareth Moore, an expert in the field, will have your kids cracking codes in no time! Includes, amazing alphabet and number codes, grids, and picture puzzles, this series is as eye-catching as it is entertaining.