Mantraps Examined

By: Brian Rhodes, Published on Jul 16, 2013

One of the oldest techniques in access control is still used today. Mantraps date back to medieval times for mandating access is only granted to specific people, with the added benefit of 'trapping' an imposter. Modern uses of mantraps vary and have expanded over the years, but the concept is still applied in a number of surprising facilities in a myriad of ways. In this note, we look at mantraps, how they are installed, and where they are used.

Overview

*** **** ***** ******** a ****** ******* * mantrap ** ***: 

****** *** *** ********** of *** ** *****:

  • *** ******* **** ****** opens ******* *** ****, until *** ****** ****** scans * **********
  • *** ****** **** *******, and *** ******* **** locks, ********** ****** **** entering *** '********' ****. 
  • *** ******* **** ******* locked ***** *** ****** door ****** *** *******.

*** '***********' ****** ** the ******* ****** **** one **** ** ** unlocked *** **** ** a ****. ***** **** restricting ******, *** ******* of *** ********* *** permit *** *********** ****** the **** ** ** normalized (***********, ********, ****) before *********** ** ** the ****** ****, ** even ***********. **** **** this ***, "********" *** often ****** "********", *** even ** ******** ** not *** ******* ****, the ******* ********** ** doors ** *** ****.

Three *******

*********, ******** *** *********** in ********** ***** ** of ***** ******* ****:

*** *****

****** ********** ***** *** configured ************ ******* ****/****** ***** ** system ******. **** **********-***** *** systems (********* **************, ******** *****, ***) offer '*******' ************** ** part ** ***** ******* with ** ********** **** beyond ********** *** ***** to *** ******.

********* ***********

*** ************ ******* *** or *** ********* *** supporting ******* *************, *** party ********** ***** *** used ** ********* ******** on ****** *****. *** image ***** ***** *** typical '******' ********** **** is ********* ** ********* doors ** *** **** way **** ******** *** is *********:

******** ********

** ***** *****, '******** ** * ***' (** '******* ******') are *****, ********** ***** mantraps *** *******, *** installing *** ***** ** not ********. ** **** cases, ***** '****' **** with ********* ***********, *** can ** ********** ** work **** ******** *** systems ** *******. ***** ******** feature * ****** ***** ** the ****** ** ********* in * '********' ****; ideally, one ****** ** * time. ** ***** ** accomplish ****, * ********** space **** ** *********** consisting ** ******* *****, frames, *** *** **** sections. ***** **** ****** be ******** ************, * "kit" ****** *** ** install ************* ******* ********** or **** ***** ** the ****. *** ****** below **** ** ******* 'kit', *********** ****** ** existing ******* ** ******** to ** ******** ****:

*** ********* ***** ***** the **** *** ***** take, ***** ******** ******* the ****** ****, ******* for ** ** *****, validating ****** *** **** opening *** **** ******** door.

****

** * **** *****, the '*** *****' ****** is ********* *** ***** expensive ****** ** *** is ******* ***** ****. 

********* *********** **** * gap, ***** **** ***** EAC ** *** ******* in ***, *** * controlled ******* ** ***** required. *** *******, * specialty ********** ***** ~$***, rather **** ********** ** EAC ****** *** ********** cost **** ******** ******** functionality.

******** ******** **** * high ****, ********* ******* ~$5000 - $*****, *** this ***** *** ** less *********, **** **********, and ******* ********** **** a '***** *****' *******.

Common ****

***** **** '********** *******' into * *****, ******** are **** ******** ** prevent ************* ** *****-***** manufacturing ** ******* ************, and ** ********-********* ****** controls **** '**********'. **** ***** *** most ******* ******* **** feature, ** **** * suspect ** ******** *** be ******** **** * police ******* ******* ****** opportunity ** ******. 

** **** *****, * sallyport ********** *** ******** of * ****/****** **** with * ******-**** ******** door. ** ***** ***** the ******** **** ** up, *** **** **** is ******, ********** ******* from ******** **** *** outside *******. ********, **** the ******** **** ** down, *** ****** **** is ********, ******** * suspect *** ***** *** booking/holding ****, *** ****** to ****** ** *** outside *******. 

Safety *****

*** ******** ***** **** apply ** *** ** maglocks ****** ******* ** the********* **** **************** *** ********. *** example, * ***** *********** or **** ** ********** differently **** ** ****** building, *** ** ****** from **** ** *** 'life/safety' *********** ********. ******** to *** ***** ***** apply ***** ******** * clear ************** ** *** building ****.

*** **** **********/*********/********** ***************, Life ****** ******* *** 'golden ****', ***** ***** that **** ****** **** always ** **********. ** this ****, ******** *** be **** ** **** people *** ** ** area, *** **** ****** be **** ** **** people ****** ***. ** the ********** ***** *** not **** ** ******* free ********* ******, **** other ******* ****** ****** paths **** ** ** present ****** *** ****.

** **** *****, ******** RTE ******** ******** *** fire ***** ********** *** required, ** **** ** an ********* ** *** can *********** ** ******* inside * "********" ****. 

Comments (5)

Brian, the medieval source you reference likely has a murder hole up top. Do any modern products include such features? That would make them even more interesting..

LOL!

A local bank has these for the entrance and exit doors. Each set is one way only. The exit door is inaccessible from the outside. The entrance is inaccessible from the inside.

Only one person is allowed inside the "man trap" at a time, per side. The first door must be closed and locked before the next door unlocks.

If you look shady coming in, the tellers have an over ride to lock the offender inside the "man trap". If you come in and rob the bank, you can be assured to get trapped inside the exit door "man trap".

The doors and walls of this system are all ballistic glass, so you won't be able to shoot your way out. You can't take a hostage because it won't lock the first door if two people enter.

One hell of a system for a bank in the hood.

Nothing says your bank is dangerous like a mantrap entrance!

It's funny because most banks (US at least) try to do as much as possible to make things friendly and inviting. That's not as easy with a mantrap.

We had a site were people were stuck in the mantrap for around 4 hours because no one wanted to activate the release on the outer door. These doors had mag locks on both sets of doors and the access control system malfunctioned not releaseing the mags. There was an emerg overide in the trap to release that outer door but everyone was too scared to use it so they sat there for hours waiting for us to reset the panel. We laughed when we got there as we told them to pull the release.

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