Final answer:
Three types of electronic barriers used for restricting unauthorized access to property are biometric access control, RFID card readers, and electric fences. These systems utilize unique personal identifiers, secure electronic chips, and physical deterrents to enhance security.
Step-by-step explanation:
The question is asking to identify three types of electronic barriers that can restrict unauthorized access to property. Among the options given, the three suitable types of electronic barriers for access control are:
- Biometric access control which uses individuals' unique physical characteristics such as fingerprints, facial recognition, or iris scans to grant access.
- RFID card readers which require a person to have a special card embedded with a radio-frequency identification chip that communicates with the reader to unlock the door or gate.
- Electric fences which provide a physical and psychological deterrent by delivering a non-lethal electric shock to potential intruders who touch it.
Other options like Closed-circuit television (CCTV) are typically used for surveillance and monitoring, rather than directly preventing access.