Teacherlock is the 1 rated school security door lock invented by an elementary school principal amy emma is an elementary principal at a massachusetts public school.
Teacher invents door lock.
Kwqc s tiffany liou reports.
Kwqc s tiffany liou reports.
We were instructed to tie a belt or a cord around the closer arm.
Teacher invents emergency school door lock.
Article by tae d.
The device can secure the door in.
June 11 2014 best of nbc news.
An iowa teacher invents a school door lock which is designed to be installed in seconds to keep dangerous intruders out of classrooms.
Most other emergency door lock devices on the market require permanent attachment to the door frame which could be maliciously triggered to say lock out a teacher who steps into the hallway for.