Thành Phần Mật Thư Gồm Có / The Secret Message Includes:
- Chìa Khóa (KEY)
- Mật Thư (Secret Letter)
Cipher
A Cipher is a system in which each letter of the alphabet is replaced by a letter, number symbol.
Pigpen Code
The Pigpen code is quite easy to catch on to. First you write out the whole alphabet in two grids, as shown:
Each letter is represented by the part of the “pigpen” that surrounds it. If it’s the second letter in the box, then it has a dot in the middle.
Reverse Alphabet
In this code, each letter in the code stands for a different “real” letter
Code Wheel-Spin
The letters and numbers on the outer circle of this cipher disc can be aligned with different letters and numbers on the inner circle.