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  2. Child safety lock - Wikipedia

    en.wikipedia.org/wiki/Child_safety_lock

    Some cars [5] implement the child lock control as a rotary mechanism which can only be operated with a key. This design ensures the child lock remains in position, preventing passengers from changing the lock position when the door is open. Once the door is closed, control of these two mechanical type child locks is completely inaccessible to ...

  3. Remote keyless system - Wikipedia

    en.wikipedia.org/wiki/Remote_keyless_system

    A security concern with any remote entry system is a spoofing technique called a replay attack, in which a thief records the signal sent by the key fob using a specialized receiver called a code grabber, and later replays it to open the door. To prevent this, the key fob does not use the same unlock code each time but a rolling code system; it ...

  4. Keycard lock - Wikipedia

    en.wikipedia.org/wiki/Keycard_lock

    There were 32 positions for possible hole locations, giving approximately 4.3 billion different keys. The key could easily be changed for each new guest by inserting a new key template in the lock that matched the new key. [2] In the early 1980s, the key card lock was electrified with LEDs that detected the holes. A keycard with a magnetic stripe

  5. Wireless light switch - Wikipedia

    en.wikipedia.org/wiki/Wireless_light_switch

    Dimmer light switch with RF-based remote control [1] A wireless light switch is a light switch that commands a light or home appliance to turn itself off or on, instead of interrupting the power line going to the light fixture. There are different ways to communicate between the switch and the fixture: [2]

  6. Remote starter - Wikipedia

    en.wikipedia.org/wiki/Remote_starter

    A remote starter is a radio controlled device, which is installed in a vehicle by the factory or an aftermarket installer to preheat or cool the vehicle before the owner gets into it. [1] Once activated, by pushing a button on a special key chain remote, it starts the vehicle automatically for a predetermined time.

  7. Latchkey kid - Wikipedia

    en.wikipedia.org/wiki/Latchkey_kid

    A child with keys to their home hanging from their neck. A latchkey kid, or latchkey child, is a child who returns to an empty home after school (or other activities) or a child who is often left at home with no supervision because their parents are away at work. Such a child can be any age, alone or with siblings who are also under the age of ...

  8. Light switch - Wikipedia

    en.wikipedia.org/wiki/Light_switch

    Two light switches in one box. The switch on the right is a dimmer switch. The switch box is covered by a decorative plate. The first light switch employing "quick-break technology" was invented by John Henry Holmes in 1884 in the Shieldfield district of Newcastle upon Tyne. [1]

  9. Internet of things - Wikipedia

    en.wikipedia.org/wiki/Internet_of_things

    O-MI is a standard published by the Internet of Things Work Group of The Open Group in 2014, which specifies a limited set of key operations needed in IoT systems, notably different kinds of subscription mechanisms based on the Observer pattern. OCF: Open Connectivity Foundation: Standards for simple devices using CoAP (Constrained Application ...