defeat ALPR
by:Shenzhen TGW Technology Co.,Ltd

Most car owners will smile when they hear the license plate recognition, because this product has brought them too much convenience, allowing car owners to get rid of traffic jams and save a lot of time.



But there are also some owners who want to take advantage of anti-ALPR. They are not terrible if they have such an idea, but are terrible if they have action. But is this possible? For the license plate recognition system, are there any loopholes that car owners can think of but engineers can't think of? Searching for license plate recognition system vulnerabilities on the Internet ,we will find a lot of articles that tell people how to defeat ALPR, but how many people will read it and then implement it later? In fact, everything on the Internet is on paper. Many so-called methods for loopholes in real license plate recognition systems will fail.



If you don't believe that you can't escape the toll, then let's take a few examples to show you why.



Example one, follow the car in front of the smart barrier

Many owners have tried to evade toll collection, and the method is to stick to the tail of the car in front of you and wait for the railing to pass before the car in front of you. Someone really tried to escape the toll collection by this method before, but now the license plate recognition system relies on the ground sense coil to control the opening and closing of the barrier. As long as the car in front passes the ground sensing coil, the barrier will come down. It is useless to cling to the tail of the car in front of you, the barrier will still drop, and then your car will be damaged, and the gain will not be worth it.



Example two, fake the license plate

Have you ever thought of getting a fake license plate number or applying the license plate number of a community monthly car owner to escape the parking fee. This may happen, but the chances of it being discovered are very high, and the consequences of this behavior are also serious. If you use the license plate number of the monthly car owner to enter, the system shows that the parking space has already been occupied and the original car owner cannot enter the venue. You will definitely be found after watching the video.



Example Three, multiple cars share one parking space

A family usually has a car, and some richer families may have two or more cars, but the fees of parking space is expensive,so the owner does not want to buy so many parking spaces for each car. Maybe the car owner will think of sharing a parking space to reduce expenses, then how should he escape the license plate recognition system? In fact, this is not feasible, even if you escape by any method, it is useless. There is a special person to manage these devices. If there is something wrong, they will investigate.



I hope that the owners can be honest, don't always think about Defeat ALPR.

ALPR Solution and LPR camera
Automated License Plate Recognition (ALPR) are becoming more recognized by end customers because people always want to be able to identify vehicles as they enter the area. Many solution providers are also aware of the potential of the market, and have provided corresponding license plate recognition schemes. As the schemes are flooded and uneven, this will be very confusing for users. Similarly, for many integrators, when installing and selecting a license plate recognition scheme, it is not easy to determine which is the best choice, and often it is not easy to provide the most suitable service for the user.so,how to choose a better solution?

The first step is choosing the LPR camera that meets the criteria

1.Matching the application scene to the LPR camera specifications .A key factor to consider in the ALPR system is the LPR camera specifications. For example, depending on the installation location, the camera will have different options. In places such as highways or high-density commercial complexes, ALPR cameras should be sophisticated enough to ensure high fidelity capture of images. Inevitably, this will increase costs, and customers should be aware of this. Since the focus, motion blur and lighting conditions will affect the camera's capture effect and reduce the accuracy of the system, when selecting a solution, it should be tested in one day or in various special environments to ensure the accuracy of the system.

2.Local processing or cloud processing? it has been very intense recently, but at present, in the license plate recognition scheme, the local processing will provide better results. In many applications, license plate recognition is often integrated with mobile payment. Considering the real-time nature of the system, the local processing method will be better, because if it is on the cloud, it will not only increase the delay, but also raise concerns about the security of the network.

3.Adaptability In Western countries, new laws and regulations will affect the change of license plate style. If the license plate recognition solution can be modified or upgraded, it is most suitable. However, in some countries in Asia, the design of license plates is relatively lacking in standardization. Users in these countries should consider more flexible identification schemes when choosing solutions. Taken together, with the development of license plates and changes in policies, it is important to choose a system that is adaptable to development and that can be continuously upgraded over time.

Then, you need to know something about installing ALPR.Once you've chosen the best solution, you should review the best practices for their installation, from camera configuration to fine-tuning for the environment.

1.Camera Setup--Most ALPR systems require fine-tuning of the lpr camera during day and night conditions. It is important that the integrator properly configure the camera settings to ensure that the vehicle or character is captured at any time of the day. In addition, the camera's position and height also play a vital role.

2.The supplemental infrastructure integrator should understand the amount of data flowing to the external server and guarantee the corresponding bandwidth support, a good local network connection will be necessary. If it is a low-cost solution, it is important to let the vehicle approach static in the area to get the best video image, such as installing a speed reducer on the road to decelerate the vehicle. If it is necessary for the tailing, the camera installation position should be carried out. Avoid occlusion.

3.Reading Delay--When using it in an authentication scheme, it is important to keep the read latency low. Proper adjustment of various camera and ALPR software parameters may help achieve this goal.

ALPR customers often make mistakes. The most common mistakes in the field is LPR Camera specifications are not properly valued. For example, when the fine-tuned shutter speed is not matched to the speed of the vehicle, the visual effect may be unclear. Not getting the correct potential reading is also a problem. The quality of the ALPR solution, especially its level of accuracy, is critical. However, many customers often do not check these parameters and compare them with other parameters when choosing a solution.

You can find more information about ALPR in Wikipedia click here>>

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Project Location: A market in Riyadh,Saudi Arabia

Project requirements: LPR&ticket parking system(Five entry and Five exit)

Project application: Manage the VIP cars and temporary car,control them to entry and exit

Project Advantages：● VIP cars with RFID cards

● Temporary cars with tickets

● Speed up the vehicle traffic

Project Location: Xiamen university, Kuala Lumpur,Malaysia

Project Requirements: ALPR system ( 2 entry and 2 exit )

Project Application: Most of vehicles will entry in this two gates,the system manages vehicles effectively

Project Advantages：Effectively manage the entry and exit of internal and external vehicles Blacklisted vehicles are prohibited from entering, high secrity