Hi, I’m Ayush Sidapara — a high school student and the inventor of this device.

This all started after I saw a wave of home break-ins near my community. Around the same time, several schools in my area received active shooter threats. As a student, it hit me hard. I realized just how vulnerable our homes and classrooms really are, and how little protection standard locks actually provide.

After taking AP Physics 2, I started to understand why. Deadbolts are poorly designed. They rely on a thin piece of metal to resist hundreds of pounds of force. It’s a weak link in what should be your strongest barrier.

That’s when I started studying better ways to secure doors. I came across door barricades, those massive steel bars used in high-risk buildings. They’re incredibly effective, but they’re bulky, hard to install, and frankly, dystopian-looking. I knew there had to be a smarter way.

So I designed one.

The Door Bull is a compact, powerful door barricade you can install in minutes. It’s discreet, engineered for real impact, and trusted by thousands of schools, homes, and senior communities nationwide. What started as a school project has grown into a mission:

Make real security accessible — and fast.

Thanks for supporting a student-built solution to a very real problem.

— Ayush