← Back to all posts
Breathing on this chip reveals a secret message
🕵️‍♂️

Breathing on this chip reveals a secret message

A fascinating team at UC San Diego has created a tiny chip that reveals hidden messages based on humidity levels. Imagine breathing on it to unveil a secret code or even a security feature on your credit card! This clever technology uses two hydrogel layers that react to moisture, making messages visible when humidity rises. It’s like something out of a spy movie, and it could even help indicate climate changes. How cool is that?
Read the original article ↗
Share