Schools’ Obsession With Anti-Gunman Gadgets Just Keeps Growing

In case teachers don’t want to buy a $400 bulletproof
whiteboard to save one person in their classroom, or
a $1000 bulletproof
(except from the side) blanket so their students can
wrap themselves up like giant bulletproof sushi, they now have the
option of purchasing the Barracuda
Intruder Defense System, a $100 door-barricading product
that appears about as easy to use as a slide rule. (The child in
this video insists that the defense system was super easy to
operate, despite his fumbling.)

The device is attached to the latch or bottom of a door and
would theoretically prevent a mass shooter from entering a
classroom. From
MyFox28:

A local firefighter and SWAT medic has invented a device that he
says could save lives in the event of a school or other active
shooter situation inside a building. 

Troy Lowe teaches shooter response training programs but over
the years he noticed similar reactions from people involved.
…

“The idea is to secure yourself inside the room without opening
the door,” Lowe said. 

“When they were tested in the factory, the door failed
before the devices did,” Lowe said. “There’s potential to save a
lot of lives.”There are a few different designs of the
steel-based product, so you can apply it to an inward-facing door
and an outward-facing door. And Lowe says the braces are
strong.

Less easy to understand is why a school would buy these if their
doors already happen to have a built-in security device sometimes
called a “lock.”