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An access badge is a credential used to gain entry to an area having automated access control entry points. The access badge contains a number that is read by a card reader. This number is usually called the facility code and programmed by the admin.
Beside this, how do proximity cards work?
The proximity card reader is wired to an access control system panel. The wires carry power to the reader, and data from the reader to the panel. The Reader emits an electromagnetic field called the "excite field". When a proximity card is brought within the field, the card absorbs some of the energy from the field.
Simply so, what was the purpose of identification badges?
Security First, the most obvious reason to use ID badges is to enhance the security of your company. Employee IDs serve as a form of instant identification for everyone in the building. They can also be used to restrict access to certain areas and even certain machines.
The access control reader sends out radio waves of a specific frequency, and when it's within range, the antenna within the card captures part of this energy and broadcasts a message which includes the unique number from the chip.