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2. Remote keyless system - Wikipedia

   en.wikipedia.org/wiki/Remote_keyless_system

   A remote control for a keyless entry system built into an ignition key: pressing a button on the key unlocks the car doors, while another button locks the car and activates its alarm system. A remote keyless system (RKS), also known as remote keyless entry (RKE) or remote central locking, is an electronic lock that controls access to a building ...

3. Smart lock - Wikipedia

   en.wikipedia.org/wiki/Smart_lock

   Electronic keypad lock. A smart lock is an electromechanical lock that is designed to perform locking and unlocking operations on a door when it receives a prompt via an electronic keypad, biometric sensor, access card, Bluetooth, or Wi-FI from a registered mobile device. These locks are called smart locks because they use advanced technology ...

4. Electronic lock - Wikipedia

   en.wikipedia.org/wiki/Electronic_lock

   Electric locks may be connected to an access control system, the advantages of which include: key control, where keys can be added and removed without re-keying the lock cylinder; fine access control, where time and place are factors; and transaction logging, where activity is recorded. Electronic locks can also be remotely monitored and ...

5. Electric gate - Wikipedia

   en.wikipedia.org/wiki/Electric_gate

   Electric gates alone, however solid and imposing they may be, cannot guarantee a completely secure environment electric locks, are often needed to boost the locking effectiveness of the gate motors. Electric gates are recommended to be used in combination with other security features to install a full security system .

6. Rolling code - Wikipedia

   en.wikipedia.org/wiki/Rolling_code

   Simple remote control systems use a fixed code word; the code word that opens the gate today will also open the gate tomorrow. An attacker with an appropriate receiver could discover the code word and use it to gain access sometime later. More sophisticated remote control systems use a rolling code (or hopping code) that changes for every use.

7. Security alarm - Wikipedia

   en.wikipedia.org/wiki/Security_alarm

   Some alarm systems are tied to video surveillance systems so that current video of the intrusion area can be instantly displayed on a remote monitor and recorded. Some alarm systems use real-time audio and video monitoring technology to verify the legitimacy of an alarm.