Our Story

Digit DEFENDER™ was invented by Pat Callahan, a college instructor and master mechanical technician – and most importantly, a parent.

When his children were ages 1 and 3, Pat’s home was filled with child-proofing gadgets to help keep them safe. Yet, he couldn’t find a solution that would prevent doors from slamming. At home, Pat and his wife worried about how just opening a window or turning on the air conditioner could create a wind-tunnel effect that caused doors to slam unexpectedly.

“The wind could rip the door knob out of your hand,” Pat said. “Imagine what the force of that slamming door would do to a child‘s fingers or hand!”

Pat searched hardware stores and online for a product that would prevent a door from slamming on tiny hands. None fit the need. Some had to be taken off completely to close the door – then put back on to keep the door open. Some were screwed into the door, marring it forever. Others made it impossible to close the door at all.

He couldn’t find anything that was easy to install, was always ready and that actually worked. So, with his background in fabrication and mechanical design, Pat started inventing something. His gravity-fed design took several years to perfect. In fact, Pat (who’s a pretty smart guy) went through 11 versions while testing and refining the design, and perfecting the manufacturing system.

The result: Digit DEFENDER is so unique that its design is now patented, and it’s so important, it should be in every home that has small children.

Digit DEFENDER is easy to install, easy to use, and always ready. Made in the USA, Digit DEFENDER provides peace of mind to anyone caring for a small child.

Safe, Secure & Sensible

The Digit DEFENDER™ Difference

  • Mounts to the door without tools
  • Is easy to use
  • Is always ready
  • Allows the door to close completely

Better than the Rest: Other door products have design and/or usage problems

  • Some must be put in place before each use
  • Some must be removed to close the door
  • Some are very complicated to install
  • Some require drilling holes into the door or door frame