Definitions for "ANTI-PASSBACK"
A feature that prevents a user from giving their code to someone else to use. A user code must be used to enter then used to exit before it can be reused to enter again. This feature requires one device for entry and a second device for exit. (Such as a proximity reader on both sides of a door). A variation of this feature is sometimes available with digitak keypads also. To prevent the same pin number from be used by many people a time element can be programmed in. The pin number wont work again till that time expires.
A function of the controlled access system that requires an access device to be used in an entrance reader before it can be used in an exit reader and vice versa. This function will deactivate any access device that is not used in the appropriate sequence.
An arrangement where the software flags a card as either 'in' or 'out' when it is used at designated readers. Anti-passback can be either local or global i.e. per controller or per system. Anti-passback can also be timed. Particularly effective at turnstiles or car park barriers. See also timed anti-passback and soft anti-pass back. Close Glossary Window