diff --git a/all.yml b/all.yml
index 0b38012..de0d03e 100644
--- a/all.yml
+++ b/all.yml
@@ -3,6 +3,12 @@
   hosts: all
   become: true
 
+  vars_prompt:
+
+    - name: username
+      prompt: What is your username?
+      private: false
+
 # #
 # # @author Stéphane Gratias (2023).
 # #