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2. 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.

3. Rolling code - Wikipedia

   en.wikipedia.org/wiki/Rolling_code

   Remote controls send a digital code word to the receiver. If the receiver determines the codeword is acceptable, then the receiver will actuate the relay, unlock the door, or open the barrier. Simple remote control systems use a fixed code word; the code word that opens the gate today will also open the gate tomorrow.

4. Smart key - Wikipedia

   en.wikipedia.org/wiki/Smart_key

   Display Key is a type of smart key developed by BMW that includes a small LCD color touchscreen on it. It performs the standard functions that a key fob would normally do such as locking, unlocking & keyless start, but because of the screen the user can also perform a number of the features from BMW's app.

5. RSA SecurID - Wikipedia

   en.wikipedia.org/wiki/RSA_SecurID

   The RSA SecurID authentication mechanism consists of a "token"—either hardware (e.g. a key fob) or software (a soft token)—which is assigned to a computer user and which creates an authentication code at fixed intervals (usually 60 seconds) using a built-in clock and the card's factory-encoded almost random key (known as the

6. Access control - Wikipedia

   en.wikipedia.org/wiki/Access_control

   The typical credential is an access card or key-fob, and newer software can also turn users' smartphones into access devices. [ 7 ] There are many card technologies including magnetic stripe, bar code, Wiegand , 125 kHz proximity, 26-bit card-swipe, contact smart cards, and contactless smart cards .

7. Why should you keep your key fob in a metal (coffee ... - AOL

   www.aol.com/why-keep-key-fob-metal-120333440.html

   These key fobs allow car owners to unlock the door, start the engine or even open the trunk from far away. ... So, be aware of your surroundings and instead of hitting the remote lock button, lock ...