Tap Code Cipher | Pocket Sized Encryption Device work gift The puzzle dates from the

The puzzle dates from the 1930's and we tried to copy the old design nearly identically as pictured in Jerry's book

There is a dilemma represented in this wooden puzzle that will have you wondering how it can be possible

Few solve it without help

and cherry

New Jersey

Tap Code Cipher | Pocket Sized Encryption Device work gift The puzzle dates from theComes with 2 tap code ciphers blocks for sender and receiver. Each block is 3x3x1 4" and fits both the hand and the pocket comfortably. All text is deeply laser engraved and brief instructions are lasered on the back. An encryption worksheet is also included which can be very helpful as you learn the code. The tap code, sometimes called the knock code, is a way to encode text messages on a letter by letter basis in a very simple way. The message is