diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md
index eacca8b41..d619e5bb9 100644
--- a/blog/posts/biometrics-explained.md
+++ b/blog/posts/biometrics-explained.md
@@ -15,4 +15,7 @@ Biometrics are a convenient and secure way to authenticate our devices. Many of
 
 ## Fingerprint
 
-One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably.
\ No newline at end of file
+One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably.
+
+As an aside, it's thought that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467).
+