From 1d1bf590baba4e3383c4ff13b2cdfcc7b3818ffc Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Mon, 13 Jan 2025 17:58:06 -0600 Subject: [PATCH] fix diagram --- blog/posts/biometrics-explained.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index 413806fb..7338ec5d 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -61,7 +61,7 @@ Conveniently they also don't require a light source under them to work, although Ultrasonic fingerprint sensors use sound to create a detailed 3D representation of your fingerprint using ultrasound waves (sound waves with a frequency greater than 20khz). It's a similar concept to what's used to map the ocean floor: sound is emitted from transducers and bounces off your skin before being picked up by tiny microphones. By measuring the time it takes for the sound to reach the microphones, your phone can create a detailed map of the ridges and valleys in your finger. -
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![Diagram showing the transducers emitting ultrasound waves and reflecting off the finger tissue, bouncing back and then being picked up by microphones](../assets/images/biometrics-explained/ultrasonic-diagram.jpg)
source: Yipeng Lu