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blog/posts/biometrics-explained.md
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@ -56,10 +56,9 @@ Optical sensors can struggle in the presence of bright sunlight, which is an iss
Capacitive sensors measure the electrical conductivity of your finger. These are much more secure than optical sensors since they can't be fooled with an image. They're also tough to fool with prosthetics as different materials will have different electrical properties.
<figure markdown>
![Diagram showing a closeup of how a capacitive fingerprint sensor works by detecting the electrical difference in the ridges and valleys of a finger](../assets/images/biometrics-explained/capacitve-diagram.jpeg)
<figcaption>source: <a href="https://www.bayometric.com/capacitive-vs-optical/">bayometric.com</a></figcaption>
</figure>
<small aria-hidden="true">Image Credit: <a href="https://www.bayometric.com/capacitive-vs-optical/">Bayometric</a></small>
Capacitive sensors won't work if the [tissue is dead](https://www.livescience.com/62393-dead-fingerprint-unlock-phone.html), since dead tissue loses all electrical charge. So morbid worries about someone using your dead body to unlock your phone can be assuaged.