Nundnet : Turnstiles & Access Controls

Nundnet : Turnstiles & Access Controls

Decades of experience in physical security systems Turnstiles, Automatic Gates & Access Controls

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  • ANTI PASS BACK

ANTI PASS BACK

by Nundnet / Monday, 18 April 2011 / Published in Access Controls, Technology, Turnstiles
Anti Pass Back

Anti Pass Back is also called as re-tracking. In simple way, it is one entry and one exit for one individual. It is a security mechanism that helps in
preventing the misuse of access key. In case an individual gains access to the site using a specific access key then this key should not be passed to
be used by another individual to gain access to same site till the exit is not made by first individual.

By enabling the this function, the complete track of each individual is maintained and the site is secured to the maximum.

ANTI PASS BACK
Assume a small office access control management system with entry & exit device at the office door. When a person wants to enter an office, the access card used gains entry for him or her to the office. But if the same card is now passed by same employee to the other employee, then the card will not work at entry but will deny the access. Till the time the same card is not used for exit, hence prevents the misuse of the card.

This feature/ Option can be integrated and exclusive or inclusive feature of access control device and can be enabled and disabled as and when required as per site requirement.

ANALOGY
Employee 1 shows card at the entry reader and gains access to enter the office.
Employee 1 passes the same card to Employee 2
Employee 2 uses the same card at the entry reader of the door
The card is rejected as Employee 1 is already in office and has not exited the office using exit reader.
So till the time card is not exited at the exit reader no person can use it to enter the office using entry reader.

TYPES OF ANTI-PASS BACK
Timed Anti Pass-back
Nested Anti Pass-back
Soft Anti Pass-back

TIMED NESTED SOFT  
The card is assigned certain periodHere the readers be used in only aThe violator can use the entry reader
of time that it can work with thedesignated sequence to leave orbut same time the alert is received by
entry reader again without exitenter the site. Access is denied if thethe operator and the person mis-using
 cards are used out of sequencethe key can be persecuted.
   

ADVANTAGES
Prevention of card theft
Passing of credentials illegally
Accurate record maintenance
High security operation

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