diff --git a/README.md b/README.md
index 473cd6e..204a484 100644
--- a/README.md
+++ b/README.md
@@ -102,6 +102,7 @@ alpha | A mix of 18 alphanumeric symbols. | 104
 parano | 78 ascii characters | 512
 pokemons | 4 classic Pokémons, each with a level up to 100 | 55
 diceware | 5 words out of the [diceware's list][diceware]. | 65
+pinXX | `XX` digits (useful for PIN codes) | `3.3 * XX`
 
 ## How it works
 
@@ -129,7 +130,7 @@ If you lack ideas but would like to participate anyway, you can also find here a
 
 1. Create other schemas.
 
-2. Let the user specify a size for some schemas.
+2. Let the user specify a size for some schemas. (By specify another command line option).
 
 3. Compatible port in mainstream programming languages.