What kind of security technology requires that a smartcard or ID be held close but not in contact with a card reader in order to enter an area?

A reader is used by radio frequency identification (RFID) devices to obtain data from a unique tag, which could be on a smartcard. The data may be employed to allow or deny access to a secured place or device. Inventory and fixed asset management are other common uses for RFID technology. An access control vestibule is a small room between two doors used to stop tailgating. A key fob is a type of hardware token that a person carries to identify the user. Biometrics are devices that use a part of a person's body such as a face, palm, or fingerprint reader to identify that person.