This is an interesting topic, so I made it a separate discussion. Original comment:
New comment on Door Closers Access Control Tutorial:
****'* * ****, ****** ****:
* ***** '**' *** **** ** why:
** ****, ********* ***** ******* ** illusion ** **********, *** ** **** person ** ***** ** ***** ******* a ****** ****, **** ** ******** glass, ** ********* **** * *** to ****** ** *******.
****, *** ******** ** ******** '* locked **** **** ****', ***** ********* can **** ********* *******, *** ***** products *** *** **** ** ******** devices, *** ** ******** *******.
**** '**********' **********, **** ******** * belt ****** * ****** *** ** defeated ** **** ******* * ****** arm *** ** ****** *** *** frame ** *********** - ** ** not ******** ** ** * ****!
*******, *** ****** * ***** '**'- Barricade ***** ***** ** ****/**** ****** trying ** **** ** ** *********. The ****** '******** **** ** * barrel' ********** ****** * ******** ******* here, *** ****** **** - ***** barricade ***** ** ***** *******, **** teachers *** ** *****, ** ** misused ** ***** **** ******* ** class ***** * **** ****** ****.
*** **** *** - *** ** schools **** ******** **** **** ******. Prank ***** ** *********** ******** **** or ***** *** ****, *** **** never **** ******** ****** *** ** fire (**********).
*****/********? **** ******** *** *******.
* ***** ***. ** ** ************ such ** * ****** ** ******* engaging ** ****** *******/****** ********* ******** around *** ********* **** ** ********* a **** ** * ******* ** last ****** ** ** ****** ** do ** **** * ******** ******** vs ** ********** ******. ****** *******/********* drills **** ***** ***** ***** ******* Fire, *******, *** *** ***** ******* our ********, ********, *** ************** **** face. *** ** ******** ** ********** for *** **** ** *************. *** harder & **** ****** ** ******** dragging * **** ******* ** ******** desks ******* * **** **** ** is ** ***** ****** * ******** tool.