diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md
index ac295711..c7ed728b 100644
--- a/blog/posts/biometrics-explained.md
+++ b/blog/posts/biometrics-explained.md
@@ -70,7 +70,7 @@ Ultrasonic fingerprint sensors use sound to create a detailed 3D representation

-source: Yipeng Lu
+Image Credit: Yipeng Lu
This is the most expensive type of sensor but it produces the most accurate readings with the highest reliability. It doesn't matter if your finger is a bit dirty or wet, it will still work unlike optical or capacitive sensors.