Most mainstream entry systems use some form of plastic ID card or badge because they
are easy to carry and use; and card readers, while they resist vandalism and abuse, one single motion through the card slot will read your card. The readers recognize millions of unique codes. Using a card access system, only the card holder can gain entrance. The card readers grant or deny access at the door and keep a permanent record of who went through the door, whether it was held open or forced open and whether unauthorized persons attempted to use their cards to gain access to an area.

Card readers at building entrances will display either a red or green light, indicating door status.
To gain access to a locked building, place your card over the reader. Flashing green and red means access is granted, and the door will unlock. A green flash followed by solid red means a valid card is read, but access is denied.

What is card access?

A card access system uses card readers to read a unique electronic signature. It then sends this signature to a computer for verification and once verified, a signal is sent to the locking device to allow entry for a given period of time.  After this period of time is over, the device secures the door. Despite their small size, card readers have a LCD to display messages, providing the system users with immediate plain text descriptions of events such as “Access Denied”!

There are many types of access cards available – magnetic stripe, bar code, etc.. Smart cards can store both the user’s ID number and hand geometry template on the card.  Smart cards are the latest development in card technology.

Having card readers installed and serviced by Tandem Security ensures complete control over any building and the people who enter it. We have been installing access control and security systems in Gauteng for years with hundreds of thrilled clients.