About Us

Why I Invented the DoorBull:
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
How It Works:

Stop intruders before they ever get in.
The Door Bull installs between your door and frame, instantly reinforcing your home’s most vulnerable point.
Deadbolts focus all the force on a tiny spot. The Door Bull spreads it out—making your door up to 100x harder to break through.
Most break-ins happen fast. Kicking in a deadbolt takes 8 seconds. The Door Bull makes it nearly impossible.
Intruders go for the hinges next. That’s why we include 6 heavy-duty screws to reinforce them too.