Nowadays, cars have entered thousands of households, and car theft is common. Nowadays, cars have entered thousands of households, and car theft is common. Automobile anti-theft generally includes these categories: mechanical lock anti-theft, electronic anti-theft system, keyless entry system, network anti-theft and biological anti-theft.
The main principle of mechanical anti-theft is to lock a certain machine on the car so that it can not play its due role, such as transmission handle lock, steering wheel lock, brake pedal lock, etc. the price ranges from tens to hundreds of yuan. It can prolong the time of theft, but can not give an alarm. There are many ways to crack it.
Electronic anti-theft mainly uses wireless signal and chip password to lock the ignition or start to achieve the purpose of anti-theft. At the same time, it has anti-theft and sound alarm functions. This is the most widely used anti-theft method in the market at present. The advantage is that it is easy to operate, but the disadvantage is that the signal of the remote controller is easy to be interfered, intercepted and cracked; Easy to make false alarm and disturb residents; It does not have permission function, etc.
Keyless entry system, that is, the remote control is replaced by smart card, and the key is cancelled with the start switch in the vehicle. The utility model has the advantages of simple and convenient operation. The disadvantage is that the vehicle anti-theft system always transmits wireless signals to the outside. Once the signal transmission between the anti-theft system and the smart card is affected, the vehicle will shut down. If the product quality is not up to standard, it is easy to cause problems such as failure to start or failure to shut down. Moreover, the keyless entry system uses wireless signals, which may be interfered, copied and intercepted.
The network anti-theft system mainly relies on the gps/gsm network signal to lock the ignition or start to achieve the purpose of anti-theft. At the same time, it can also silently transmit the alarm information and the location of the alarm vehicle to the alarm center through the satellite positioning system. The advantages are convenient operation and many functions. The disadvantages are also obvious. The gps/gsm network signal has blind spots, and the gpa/gsm signal can not be positioned for vehicles in the blind spot area, so it is easy to be disturbed.
Biometric anti-theft system uses human characteristics as the only key to unlock, including automobile fingerprint start controller and vein scanning controller. Taking fingerprint start-up as an example, it takes advantage of the large amount of information carried by human fingerprints and the almost zero coincidence rate of each person's fingerprints. The information of the owner's fingerprints is stored in the system in advance, and the car can be started only after the verification of the fingerprints, which greatly ensures the safety of the car.
