Number switch
What you'll need
- A piece of paper
- Pencil
How to do it...
To make an easy number cipher, substitute a number for every letter in the alphabet. Begin with number one for the letter A.
To make a trickier number cipher, put the alphabet in a box (see picture). Put either I and J or Y and Z together in one box. Write each letter as a double number: A=11, B=12, C=13, and so on!
Illustration: Barbara L. Gibson