With the development of electronic technology, especially micro-control integrated circuit technology and embedded software development technology, as well as big data technology, the integration degree of electronic weighing scales has been increasing. The A/D conversion chip and the MCU chip have been integrated together. The electronic weighing scale industry has become increasingly mature and convenient to use. However, the use of embedded cheating software programs to enter the backdoor through passwords and randomly adjust the weighing results of the electronic scale has not been well resolved. At the same time, the design of these password backdoors is very concealed, making the technical threshold for supervising and managing the cheating methods of electronic pricing scales increasingly high, seriously undermining the fairness and justice of market transactions and damaging the interests of the majority of consumers.
The cheating behavior of electronic pricing scales exists in some individual markets with unified management, but is relatively common among mobile individual vendors. Especially in the post-pandemic era, the management policies of the competent authorities towards mobile vendors have been appropriately relaxed, and the cheating problem of electronic pricing scales has once again emerged. The recent exposure of "ghost scales" on the internet platform also strongly reflects this issue.
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Existing cheating methods of electronic pricing scales and their countermeasures
At present, the cheating methods of electronic pricing scales mainly include two ways: hardware circuit modification and software password cheating backdoor.
The hardware circuit cheating method is to add circuits such as remote control circuits, and use remote control devices to change the output signal amplitude of the sensor during cheating, so that the weighing scale shows the weight, in order to achieve the cheating purpose. This method requires disassembling and modifying the electronic pricing scale. The common countermeasures at present are to add anti-disassembly devices such as seals and seals on the electronic pricing scale.
Compared with the hardware method of cheating, the software password cheating method is more concealed. Users enter the cheating state by inputting passwords, key combinations, etc. during cheating, thereby changing the measurement result. This brings great difficulties to supervision and evidence collection. Therefore, units such as Wuxi Metrology Institute and Zhejiang Metrology Institute have designed cracking devices for the cheating codes of electronic pricing scales. The basic principle is to detect through automatic detection of key combinations, identify possible cheating passwords, and verify and analyze them through technicians for confirmation.
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Cheating in other industries and their countermeasures
The cheating problem of electronic pricing scales is prominent. Does it also exist in other industries? What are the solutions? The author analyzed the cheating and anti-cheating in the electricity meter and fuel dispenser industries.
In the electricity meter industry, State Grid has strict entry standards for suppliers, and the entities with cheating needs are usually at the consumer end of the users rather than the manufacturer's behavior. This provides extremely favorable conditions for the prevention of cheating in electricity meters. At the same time, State Grid and electricity meter manufacturers also pay attention to the cheating behavior of users and actively propose anti-cheating solutions, which is also the reason for the reduction of electricity theft phenomena. Water meters, gas meters, and heating meters also follow the same principle. Since consumers are often driven by profit, if they cannot obtain benefits from cheating on the meter, they will pay more attention to the accuracy of the meter and, from another perspective, supervise whether the measuring instrument is inaccurate.
The cheating problem of fuel dispensers harms the interests of consumers and the state. The main entities of cheating are merchants. The structure of fuel dispensers is complex, and the cheating is difficult. It requires a high technical threshold. From some cases, the majority of the perpetrators are internal personnel of the merchants, presenting the characteristics of few sporadic cases and major cases. The cheating methods of fuel dispensers mainly include adding remote control devices, program cracking, and replacing the measuring chips. The countermeasures include: inspecting whether there is any artificial damage to the appearance, reading the fuel dispenser's measurement information at certain intervals using a measurement POS machine, and comparing the data to prevent cheating.
From the examples of these two industries, the electricity meter manufacturers and fuel dispensers have designed anti-cheating devices for electronic pricing scales. The supervision of oil machine production enterprises is strict, and the willingness of enterprises to cheat is not strong. Cheating behaviors mainly occur among individuals and merchants, and they have a certain degree of professionalism. The production threshold of electronic price meters is much lower than those of the above two industries. There are numerous production enterprises, and the industry competition pressure is high. Under the economic incentive of the industry, technicians and maintenance personnel have participated in cheating, making the cheating behavior increasingly concealed.
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Ideas for preventing cheating in electronic price meters
Based on the anti-cheating methods of electric energy meters and fuel dispensers, combined with both regulatory and technical aspects, some ideas for preventing cheating in electronic price meters are proposed.
(1) Traceability and Supervision
Establish an electronic price meter data supervision service platform, which conducts a full life cycle data cloud service platform for the production, maintenance, and calibration of electronic price meters. The platform can trace relevant information. 
① In the production process, electronic price meter production enterprises conduct production marking and setting operations through authorization and upload various legal-related information of the products to the cloud management platform to ensure that each electronic price meter corresponds to a set of factory data. ② In the calibration process, the metrology department records each calibration information and uploads it, and reminds users to calibrate on time through the cloud management platform. ③ In the maintenance process, third-party maintenance or manufacturers obtain authorization to repair the price meters and upload the maintenance situation and records to the cloud management platform. From the technical perspective, connect all links to ensure the authenticity and reliability of the data, and provide the regulatory party with information traceability of the electronic price meters throughout the life cycle. The specific process is shown in the following figure. (2) Standardization and Admission Threshold
Redefine electronic price meters, formulate relevant standards for anti-cheating hardware and software that can connect to the cloud platform, formulate metrological technical specifications for electronic price meter traceability, such as stipulating requirements for data interfaces, communication modes, data encryption and management, etc. Establish a supervision mechanism, establish fair competition regulations and systems, and optimize the market admission threshold for electronic price meters.
(3) Public Consumer Supervision
Through interactive technical means such as QR codes and background management, add supervision functions throughout the life cycle of electronic price meters, optimize complaint channels, increase public supervision approaches and methods, and encourage the majority of consumers to actively participate in the supervision of electronic price meters, establish public supervision. 2
Closed-loop, forming a multi-party regular supervision model involving consumers and relevant departments, is more conducive to safeguarding the fundamental interests of consumers. Improving the credit supervision mechanism, incorporating public opinion focus, complaints and reports into the public credit system, enables cheating merchants to shift from "not daring to cheat" to "not wanting to cheat", effectively maintaining social stability and order. 
4 Conclusion
Due to their high mobility, electronic weighing scales frequently experience cheating incidents, and the difficulties in supervision implementation are particularly prominent. This article, through relevant technical means, fundamentally proposes a solution for rectifying and tracing the origin of electronic weighing scales. It also presents an idea for preventing cheating on electronic weighing scales, including how to trace the entire life cycle of the weighing scales, the revision of various relevant standards and regulations, how to achieve joint supervision by multiple parties, to reduce the possibility of cheating at its root, improve the punishment intensity for cheating in the process of both mid-process and post-process, make participants in the production and use of electronic weighing scales "afraid of cheating and unwilling to cheat", improve the reliability of measuring instruments, ensure fair and just market order, and safeguard the fundamental interests of consumers. 
"Operation", to achieve the goal of enabling the people to supervise the electronic weighing scales and allowing them to be used under the open sky.