How Car Key Chips Work

Among the many trendy electronic devices in the car, the smart key system is very eye-catching. Keyless entry technology brings excellent convenience. One-key startup brings a full sense of science and technology. This change in action is enough for many bosses to pay a lot of money to buy some models even equipped with smart key systems.

However, the definition and application technology of smart key varies from manufacturer to manufacturer. How can it be regarded as a smart key system? Is the smart key system safe? Let's first analyze the "keyless entry" part of the smart key system.

From traditional keys to smart keys

Regardless of the era, car keys are used to open the door and start the engine. As a car with high value and certain danger during use, the key is particularly important. The key of the early car was a piece of metal plate. Turn the key to open the door and twist the key to light. No technology. Later, some manufacturers integrated the identification chip on the key, and they had to go through the double identification of the key and the chip to start the car.

Traditional mechanical key

Later, with the remote control key, the door lock can be opened or closed with a single press. The remote control is a wireless signal source with the same frequency band as the vehicle. The car door can be opened or closed by issuing a command. We can compare the instruction to a sentence and the frequency band to a language. This is like saying that the remote control says "sesame to open the door" to the vehicle in Mandarin, and then the vehicle opens the door. However, the vehicle remote control also takes into account the function of the key, the instructions are different for different models, and the brands and language of the different frequency bands are different. When other car owners issued the Cantonese "Bunny obediently open the door" command in the Cantonese language, they naturally could not match and would not affect our cars.

At present, many models are equipped with intelligent keyless entry system, which can unlock the car and ignite people without taking out the key. A smart key using RFID-radio frequency identification technology has a verification action during the opening of the door. When the vehicle is locked, it will continuously send out signals. When the smart key appears in the signal range, there will be a Respond and complete the check.

This is like a car shouting "King of Tigers" every few seconds, and when the key is heard, it will reply "Pagoda Town River Demon", ok, the check is done, you do n’t need to take out the key and touch the door handle. Device or button to unlock. The reverse is also true, when you leave the vehicle, the vehicle automatically locks and closes the window (some models do not have the exit lock function, or additional settings are required, and when purchasing, you should ask clearly).

Many people see that there will be questions at this time. What is the safety at the same time that technology increases convenience? Let ’s take a look at security.

On a vehicle without an anti-theft system, it's easy for baddies to drive away your car. Just like on TV, a bit more violent will smash the drive window, destroy the ignition lock cylinder, pull out a few wires, and connect it casually. As the engine roars, this car will not belong to you. It's a bit technical and will use a series of tools to get all the locks in minutes.

The seemingly convenient remote control also brings convenience to thieves. Early fixed-code remote controls could only send a code that could not be called a password. With the development of technology, the thief also has a tool that can monitor signals. . When your remote control yells "Sesame Door Opening" to your car, of course, others can also hear it. When you are away, the recorded "Sesame Door Opening" has been replayed, haha. .. The car is so obedient.
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