From 68ed697c9bff8d910f9bdd81bbbfd06b635babfb Mon Sep 17 00:00:00 2001
From: fria <138676274+friadev@users.noreply.github.com>
Date: Sat, 30 Nov 2024 23:41:46 -0600
Subject: [PATCH] add types of sensors

---
 blog/posts/biometrics-explained.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md
index 56241b054..3cf3a3cd6 100644
--- a/blog/posts/biometrics-explained.md
+++ b/blog/posts/biometrics-explained.md
@@ -20,4 +20,8 @@ One of the most recognizable types of biometric authentication has to be the fin
 
 1. It's theorized 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).
 
+There four main ways we accomplish this: optical sensors, capacitive sensors, ultrasonic sensors, and thermal sensors.
+
+### Optical Fingerprint Sensors
+