Access Control Mantraps Guide

By Brian Rhodes, Published Sep 26, 2019, 11:31am EDT (Info+)

One of access's primary goals is keeping people out of places they should not be, but slipping through open doors (ie: Tailgating) is often easy.

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For high security locations, strict access controls often require the physical opening itself to help restrict access, and mantraps are one of the most effective methods of doing this.

Inside we examine these key six mantrap factors:

  • Using Mantraps vs. Turnstiles
  • Mantraps have been used for hundreds of years
  • Revolving doors can be used as mantraps too
  • Mantrap cost
  • Vehicle mantraps called 'Sallyports'
  • Free egress still applies

Using ******** **. **********

*** **** ************, *** ****** ******* mantraps ** ********** (*** ************* ******** ****) ******* ******* *********, *** mantraps *** '****** ********' **** ********** alone.

**** ********, ******* ******** ***** **** turnstiles **** ******* **** ****, ******** objects **** ********* *****, *** *********** allowing ********* ** ****** *** *********:

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** **** *****, ********** **** '*************' and ***** ***** ******** ***** **** access *******, **** **** *** ***** be *********** ** ** *************** ******** way:

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Mantraps **** *** *********

*** ** *** ****** ********** ** access ******* ** ***** **** *****. Mantraps **** **** ** ******** ***** for ********* ****** ** **** ******* to ******** ******, **** *** ***** benefit ** '********' ** ********.

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****** **** ** ******** **** *** have ******** **** *** *****, *** the ******* ** ***** ******* ** many ********** *****.

Mantrap ****** ** *********

*** **** ***** ******** * ****** example * ******* ** ***:

****** *** *** ********** ** *** it *****:

  • *** ******* **** ****** ***** ******* any ****, ***** *** ****** ****** scans * **********
  • *** ****** **** *******, *** *** outside **** *****, ********** ****** **** entering *** '********' ****.
  • *** ******* **** ******* ****** ***** the ****** **** ****** *** *******.

*** '***********' ****** ** *** ******* allows **** *** **** ** ** unlocked *** **** ** * ****. Aside **** *********** ******, *** ******* of *** ********* *** ****** *** environment ****** *** **** ** ** normalized (***********, ********, ****) ****** *********** it ** *** ****** ****, ** even ***********. **** **** **** ***, "mantraps" *** ***** ****** "********", *** even **** ******** ** *** *** primary ****, *** ******* ********** ** doors ** *** ****.

*** ********* ***** ***** *** **** one ***** ****, ***** ******** ******* the ****** ****, ******* *** ** to *****, ********** ****** *** **** opening *** **** ******** ****.

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Revolving *****

*** ** *** **** ************* ********, yet ********* ********* ***** *** ********* doors. **** ********* **** ** ***** sold ** * *******. *** ******** of ***** ***** *** *** **** as **** ****** **********, *** *** chambers *** ********** ***** *** ********* fitting **** **** * ****** ******:

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***** ****** ******* ********* ** ******, costs *** ************ ********** *** **** high. ****** ******-**** **** *** **** $8,000 *** *** **** ***** **** occupancy ********* *** **** ~$**,*** *** or **** *** ******* *********** ********* and ***** ***** *********** ** *******.

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Mantrap ****

** * **** *****, ************ **** of ***** *** *********** *** ********* configuration ** ********* *** ***** ********* option ** ****** ** ******* ***** used.

********'***' ** ***** ***************** **** ~$*,*** - $**,***, *** this ***** *** ** **** *********, less **********, *** ******* ********** **** custom '***** *****' *******.

*** ********* *****, ******-**** **** *** cost $*,*** *** *** **** ***** high ********* ********* *** **** ~$**,*** USD ** ****. ***** ******* ***** require *********** ********* *** ***** ***** involvement ** *******.

Vehicle ********: **********

***** **** ********** ********** ******* **** a *****, ******** *** **** ******** to ******* ******* ********* ** ********-********* access ******** **** '**********'.

**** ***** *** **** ******* ******* this *******, ** **** * ******* or ******** *** ** ******** **** a ****** ******* ******* ****** *********** to ******.

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** **** *****, * ********* ********** the ******** ** * ****/****** **** with * ******-**** ******** ****. ** cases ***** *** ******** **** ** up, *** **** **** ** ******, preventing ******* **** ******** **** *** outside *******.

********, **** *** ******** **** ** down, *** ****** **** ** ********, allowing * ******* *** ***** *** booking/holding ****, *** ****** ** ****** to *** ******* *******.

Safety ***** ***** *****

*** ******** ***** **** ***** ** use ** ******** ****** ******* ** the********* **** **************** *** ********. *** *******, * penal *********** ** **** ** ********** differently **** ** ****** ******** *** is ****** **** **** ** *** 'life/safety' *********** ********. ******** ** *** which ***** ***** ***** ******** * clear ************** ** *** ******** ****.

*** **** **********/*********/********** ***************, **** ****** remains *** '****** ****', ***** ***** that **** ****** **** ****** ** maintained. ** **** ****, ******** *** be **** ** **** ****** *** of ** ****, *** **** ****** be **** ** **** ****** ****** one.

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** **** *****, ******** *** ******** hardware *** **** ***** ********** *** required, ** **** ** ** ********* no *** *** *********** ** ******* inside * "********" ****.

Comments (9)

We actually had a technician build a couple of man trap devices from an Arduino and relays for a customer as the one we had used from a manufacturer kept breaking.

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Not good! Do you remember details/make/model on the unit that malfunctioned?

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Let me rephrase this isn't your traditional man trap. This is more of the doors have to be closed in order to continue on to the next area. So what that said it isn't a man trap really. No I don't remember the manufacturer.

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Good report, Man Traps are unique and usually form from the need to have rather than the nice to have application. Love the Medieval photo, hope most are paying attention. This mock up seems to be on the analog technology side, could you do a write up using futuristic concepts even if they do not exist? This helps others visualize a think tank environment where we can contribute to a new standard of trap. As I have UD posted before on AI Video man traps and GSM device tracking/authentication.

Most dinosaurs are still listening to this song and this is why things do not change, well at least not drastically in our small industry.

Dinosaur Song: Meat Loaf - I'd Do Anything For Love (But I Won't Do That) (Official Music Video) - YouTube

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I can see there is a similar challenge in mantrap when compared to tailgating in turnstile.

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You must always find commercial off the shelf solutions. Custom design builds cant be replicated in the field. One techs ability to design and build does not translate into another techs ability to design and build. Let alone how do you repair the solution once it fails. No clue on where to get the customer parts.

Just because a part from a manufacture keeps breaking does not mean you custom design. It means you go find another manufacture. I had a problem with electronic transfer hinges from one manufacture. The wires kept breaking inside the hinge within the first six months of install. We shopped around, located a different manufacture and never had a problem after that. I had hinges after that that had lasted at least 4 - 5 years before i moved on from that company. As far as i know the replacement hinges are still going strong.

The purpose of man trap is to secure an area, prevent piggy backing, and to get 100 percent accountability of those who enter or exit a space.

I'd also point out besides jails, many commercial cash handling facilities such as a bank commercial vault facility will use a sallyport. This is to allow the armored vehicles a safe place to enter, off load or load the cash and coin without being exposed to the public. This is not your local bank branch. I am referring to a commercial vault. The central hub for the bank where they take in all of the cash and deposits from their branch banks and from the larger commercial/business customers.

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We often use revolving door unaware it's a mantrap

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Didn't know the history of "Mantrap" till today,

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I'm glad you highlighted the safety codes. Sometimes customers don't always understand that free egress is necessary and the added cost of of installation for push to exit buttons for maglocks or RTE's comes into question.

In my previous role (as an end user), something that we did as a test was use linking groups in the ACM to create a mantrap scenario between doors that were not a true mantrap. We didn't fully test this as it was a high traffic area but we were trying to think outside the box a bit to avoid a lobby remodel. In theory it seemed like it would work. Brian, what are your thoughts on that?

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