(National Sentinel) Ingenious: A Wisconsin high school senior set to enlist in the U.S. Army after graduation has invented a new security device for classroom doors that can stop an active shooter or other threat from entering.

The student, Justin Rivard, calls his device “JustinKase,” and it’s already being purchased by some schools, including the one he attends.

As Fox News reports, Rivard actually invented his device when he was 15, but he’s been spending the past few years perfecting it. He sells it online for $95.

The JustinKase device locks down classroom doors and prevents them from being opened even a little bit.

“Unlike other products, JustinKase does not allow a door to open even a crack which means students & staff can remain safe while emergency personnel race to the scene,” Rivard, a student at Somerset High School, explains on his website.

He said he was motivated to come up with a better security system after going through “active shooter training” at his high school and discovering that there were security shortfalls in actions that students and teachers could take.

So he was then challenged by his school shop teacher to come up with a better system, he said.


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