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2. Rolling code - Wikipedia

   en.wikipedia.org/wiki/Rolling_code

   A rolling code (or sometimes called a hopping code) is used in keyless entry systems to prevent a simple form of replay attack, where an eavesdropper records the transmission and replays it at a later time to cause the receiver to 'unlock'. Such systems are typical in garage door openers and keyless car entry systems.

3. Remote keyless system - Wikipedia

   en.wikipedia.org/wiki/Remote_keyless_system

   Prior to Remote Keyless Entry, a number of systems were introduced featuring Keyless Entry (i.e., not remote), including Ford's 1980 system introduced on the Ford Thunderbird, Mercury Cougar, Lincoln Continental Mark VI, and Lincoln Town Car, which Ford called Keyless Entry System (later marketed SecuriCode). The system used a five-button ...

4. Smart lock - Wikipedia

   en.wikipedia.org/wiki/Smart_lock

   Similarly, the key is no longer a physical key, but a special electronic key. When unlocking, the unlocking authority needs to be assigned before. Through the management system, the administrator needs to set the user, unlock date and time period for the key. Whenever the user unlocks or locks the lock, the unlock record will be saved in the ...

5. This $30 device defeats almost any keyless car or garage door

   www.aol.com/news/2015-08-10-hacking-device-lets...

   The security researcher known for his droll (and scary) hacks has created a device called "Rolljam" that cracks the wireless entry systems used by car- and garage-door makers. He demonstrated it ...

6. Smart key - Wikipedia

   en.wikipedia.org/wiki/Smart_key

   So on first view, the Keyless Entry / Go ECU and the SmartKey could communicate together. A third person at the car could pull the door handle and the door would open. However, in every Keyless Entry / Go system provisions exist to avoid a successful two-way communication via RSA. Some of the most known are:

7. HomeLink Wireless Control System - Wikipedia

   en.wikipedia.org/wiki/HomeLink_Wireless_Control...

   The system typically features three buttons, most often found on the driver-side visor or on the overhead console, which can be programmed via a training sequence to replace existing remote controls. It is compatible with most RF-controlled garage door openers, as well as home automation systems such as those based on the X10 protocol.