Show HN: BreathylBox – A lockbox that only opens when you're sober

Hi HN,

I'm an incoming college freshman building BreathylBox, a lockbox that stays locked unless you pass a breathalyzer test and authenticate with a passcode. It’s designed to help prevent access to car keys, firearms, or phones when someone’s been drinking.

Here’s the landing page: https://www.breathylbox.com

Right now, we’re validating demand across use cases:

Parents storing car keys after parties Gun safety in homes with teens People trying to reduce tech use while drinking

We’re not selling anything yet — just trying to see if the idea resonates and which use case to prioritize. Would love your feedback:

Would you use something like this? What should we do (or avoid) before moving to manufacturing? Any obvious legal or hardware red flags?

Thanks in advance — happy to answer any questions!

Sean Short, CEO BreathylBox (seanshort@breathylbox.com)