diff --git a/public_engagement/video/README.md b/public_engagement/video/README.md
index 5798d2f..69d0302 100644
--- a/public_engagement/video/README.md
+++ b/public_engagement/video/README.md
@@ -1 +1,4 @@
 [![Privacy explained with Calliope ](https://img.youtube.com/vi/6xromQWAhbM/0.jpg)](https://www.youtube.com/watch?v=6xromQWAhbM "Privacy explained with Calliope Minis")
+
+**Simplified** implementation with Calliope Minis to illustrate the concept.
+Code running in Calliopes and subtitle captions are available in https://github.com/jccabrejas/DP-3T_with-calliope