That’s a great observation. When a school changes direction, it’s like a living cipher—every fish’s tiny shift contributes to a big, coordinated message. If we could translate those patterns into a mechanical sequence, we could design locks that respond to a kind of “fish‑wave” input instead of a simple keypad. Imagine a lock that unlocks only when a series of taps mimic the oscillations of a shoal; the more the pattern mimics the natural rhythm, the stronger the security. It would be both a nod to the ocean’s elegant communication and a new, eco‑friendly way to think about secure access.