Show HN: Spy Codes: free booklet for kids (2018)

It’s 6 pages of my favorite Spy Codes, for use with your own budding spy team (i.e. your kids). Last year I blogged about: Dadding 101: Give Your Kids A Trail of Codes To Break…. and of course coding trails are not limited to use by dads. Simon Singh’s delightful volume “The Code Book” is a great read on the topic of codes throughout history.

Source: www.secretgeek.net