Make sure the message gets to the appropriate person. A code involves writing a word as a secret word. This can be expanded to a simple message, a sentence or something even larger like a computer program. A cipher is a code in which every letter of a word is written in a secret way. The Morse Code is a cipher kind of code.
Codes usually have two parts.
The first is for making the code. This is known as encoding the message. The second part is called decoding the message. All persons using a code must know how to encode before they can decode and understand the message. Walk them through the encoding process together and show them how to decode together.