The ID badge has become a nearly universal emblem of corporate life. In companies large and small, new employees are issued a radio-frequency identification (RFID) card that provides visual identification and unlocks the door when they arrive at work.
RFID cards provide employees with secure 24-7 access to the workplace while maintaining a record of exactly who has entered the building and when. They are cheaper, easier to manage and more secure than physical keys; if they are lost or an employee is terminated, card access can simply be turned off.