3
Every letter slides 3 forward. A becomes D.
Your message
—
↓ scrambled with key 3
Secret code
—
The key, letter by letter — your letters light up
Write a secret note
Slide every letter down the alphabet by a secret number. Send the code and the number, and only they can read it back.
Every letter slides 3 forward. A becomes D.
Your message
↓ scrambled with key 3
Secret code
The key, letter by letter — your letters light up