Field service visit authenticity verification method and system

Abstract

The invention relates to an attendance management technology, discloses an outworking visit authenticity verification method and system, and solves the problem that an outworking visit authenticity verification scheme adopted in the prior art cannot accurately and efficiently verify the visit authenticity. In the scheme of the invention, a management system generates a first two-dimensional code containing identity information for a visited person, and an outworker scans the first two-dimensional code provided by the visited person by using a first terminal machine and uploads the first two-dimensional code when the visit begins; the management system generates a second two-dimensional code based on the first two-dimensional code and the visit task keyword; in the visiting process, the first terminal extracts, records and uploads keyword information in real time, and the management system generates a third two-dimensional code according to the keyword information and the first two-dimensional code and issues the third two-dimensional code to the second terminal of the visited object, so that field staff can scan the third two-dimensional code; in addition, when the visiting starts and ends, the first terminal and the second terminal scan contours mutually; and the management system judges the authenticity of the field visiting based on the similarity between the third two-dimensional code and the second two-dimensional code and the two received contour scanning results.

Description

Technical Field

[0001] The present invention relates to attendance management technology, and in particular, to a method and system for verifying the authenticity of field visits. Background Art

[0002] During the work process of field staff, due to their work nature, they often need to go out to visit customers, which makes the attendance management for them quite complicated. Traditional attendance methods, such as punching cards, are not applicable to field staff because they cannot return to a fixed location on time to punch cards.

[0003] Currently, in some existing technologies, in order to effectively manage the attendance of field staff, the following several field visit authenticity verification schemes are adopted:

[0004] (1) Verification based on location information:

[0005] Field staff use a mobile application (such as DingTalk, Enterprise WeChat, etc.) to read the current location information of the mobile phone and sign in at the specified location. However, since location positioning generally uses horizontal plane positioning within a certain range and cannot be accurate to a specific floor, and there are errors. Moreover, the location information can only prove that the field staff is within the corresponding location range and cannot verify whether a real visit has been made.

[0006] (2) Verification based on image information:

[0007] When the field staff arrives at the designated location, they use the mobile phone to take a group photo of themselves and the environment where the visited object is located and send the photo to the management staff for manual confirmation. There are also some that use image recognition technology, that is, use an AI algorithm to recognize the taken photo to verify whether the photo truly reflects the environment of the visit site. However, this method has the problem that time and number are easy to forge, such as taking multiple photos at one time and using them cyclically, and it is impossible to confirm whether a real visit action has been taken after taking the photo.

[0008] (3) Verification based on task setting:

[0009] The enterprise assigns specific visit tasks to field staff through the management system and sets the standards and time requirements for task completion. Field staff need to complete the visit tasks within the specified time and fill in detailed execution records after completing the tasks, including the visited objects, visit times, visit contents, etc. The enterprise arranges back-office management staff to conduct manual telephone follow-up or on-site spot checks on the visit situations of field staff. For example, by communicating with the visited objects, the actual visit situations of field staff are understood to further verify the authenticity of the visits. However, this cumbersome verification process leads to low efficiency and requires dedicated back-office management staff, which not only increases the enterprise's management costs but may also cause dissatisfaction and resistance among field staff, triggering a trust crisis.

[0010] In summary, the existing field visit authenticity verification scheme has the problem of being unable to accurately and efficiently verify the authenticity of visits. Summary of the Invention

[0011] The technical problem to be solved by the present invention is: to propose a field visit authenticity verification method and system to solve the problem that the existing field visit authenticity verification scheme is unable to accurately and efficiently verify the authenticity of visits.

[0012] The technical solution adopted by the present invention to solve the above technical problem is:

[0013] On the one hand, the present invention provides a field visit authenticity verification method, including the following steps:

[0014] S1. The management system generates a first two-dimensional code according to the identity information of each person to be visited and sends it to the second terminal of the corresponding person to be visited.

[0015] S2. After receiving the visit task, the field staff go to the visit site and use the first terminal of the field staff to scan the first two-dimensional code on the second terminal of the person to be visited this time and upload it to the management system.

[0016] S3. The first terminal of the field staff and the second terminal of the person to be visited this time perform mutual contour scanning, and upload the scanned contour information to the management system.

[0017] S4. The management system extracts keywords from the current visit task and generates a second two-dimensional code in combination with the corresponding information of the received first two-dimensional code, and sends it to the first terminal of the field staff.

[0018] S5. The field staff use the first terminal to receive the second two-dimensional code and upload it to the management system to confirm the start of the current visit task.

[0019] S6. After the start of this visit task, the monitoring software on the field staff's first terminal extracts and records the keyword information during the visit in real time, stamps each piece of keyword information with a time stamp, and uploads it to the management system;

[0020] S7. The management system generates a third two-dimensional code based on the keyword information during the visit and in combination with the corresponding information of the first two-dimensional code, and sends it to the first terminal of the field staff;

[0021] S8. The person to be visited this time scans the third two-dimensional code on the first terminal of the field staff through their second terminal and uploads it to the management system;

[0022] S9. The first terminal of the field staff and the second terminal of the person to be visited this time perform contour mutual scanning again, and upload the scanned contour information to the management system;

[0023] S10. The management system judges the authenticity of this field visit based on the similarity calculation between the received third two-dimensional code and the second two-dimensional code, and the comparison of the scanning results of the contour information received twice before and after.

[0024] Further, in step S1, the first two-dimensional code generated by the management system according to the identity information of each person to be visited is a fixed two-dimensional code or a temporary two-dimensional code.

[0025] Further, in steps S3 and S9, when performing contour mutual scanning, the identification features preset on the other party's terminal are also scanned.

[0026] Further, step S8 also includes: after the management system receives the third two-dimensional code uploaded by the second terminal, it marks this visit task as the completed state.

[0027] Further, in step S10, the management system judges the authenticity of this field visit based on the similarity calculation between the received third two-dimensional code and the second two-dimensional code, and the comparison of the scanning results of the contour information received twice before and after, including:

[0028] By using a similarity algorithm to calculate the similarity between the information in the third two-dimensional code and the information in the second two-dimensional code, if the calculated similarity value is greater than or equal to the preset threshold, and the scanning results of the contour information received twice before and after are the same, it is determined that this field visit is valid; otherwise, the authenticity of this field visit is suspected.

[0029] On the other hand, the present invention also provides a system for verifying the authenticity of field visits, including:

[0030] A management system is used to generate a first QR code according to the identity information of each person to be visited, and send it to the second terminal of the corresponding person to be visited; and, assign visiting tasks to field staff, extract keywords from the current visiting task, and generate a second QR code in combination with the corresponding information of the first QR code received from the first terminal, and send it to the first terminal of the field staff; and, generate a third QR code according to the keyword information during the visit, in combination with the corresponding information of the first QR code, and send it to the first terminal of the field staff; and, judge the authenticity of the current field visit based on the similarity calculation between the third QR code received from the second terminal and the second QR code received from the first terminal, and the comparison of the scanned contour information results received twice before and after.

[0031] The first terminal is used to receive visiting tasks, scan the first QR code on the second terminal of the person to be visited this time and upload it to the management system, and, receive the second QR code sent by the management system and upload it to the management system, confirm the start of the current visiting task, and, use the monitoring software to extract and record the keyword information during the visit in real time, timestamp each keyword information and upload it to the management system, and, receive the third QR code sent by the management system for the person to be visited to scan through the second terminal, and, perform contour mutual scanning with the second terminal, and upload the scanned contour information to the management system.

[0032] The second terminal is used to receive the first QR code sent by the management system for the field staff to scan through the first terminal, and, scan the third QR code on the first terminal of the field staff and upload it to the management system, and, perform contour mutual scanning with the first terminal, and upload the scanned contour information to the management system.

[0033] Further, the management system includes:

[0034] The task assignment module is used to assign visiting tasks to field staff;

[0035] The keyword extraction module is used to extract keywords related to the task from the visiting task;

[0036] The first QR code generation module is used to generate a first QR code according to the identity information of each person to be visited, and send it to the second terminal of the corresponding person to be visited;

[0037] The second QR code generation module is used to generate a second QR code according to the keywords extracted from the visiting task, in combination with the corresponding information of the first QR code received from the first terminal, and send it to the first terminal of the field staff;

[0038] The third QR code generation module is used to generate a third QR code based on the keyword information during the visit, combined with the corresponding information of the first QR code, and send it to the first terminal of the field staff;

[0039] The visit authenticity verification module is used to judge the authenticity of the current field visit based on the similarity calculation between the third QR code received from the second terminal and the second QR code received from the first terminal, and the comparison of the contour information scanning results received twice before and after.

[0040] Further, the visit authenticity verification module is specifically used to calculate the similarity between the information in the third QR code and the information in the second QR code by using a similarity algorithm. If the calculated similarity value is greater than or equal to the preset threshold, and the contour information scanning results received twice before and after are the same, it is determined that the current field visit is valid; otherwise, the authenticity of the current field visit is suspected.

[0041] Further, identification features are set on both the first terminal and the second terminal.

[0042] Further, the identification features include but are not limited to: a unique QR code, barcode, serial number or physical mark.

[0043] The beneficial effects of the present invention are:

[0044] (1) The present invention combines multiple technical means such as QR code scanning technology, terminal contour scanning, keyword extraction and similarity judgment to conduct multiple verifications on the authenticity of field visits, which can effectively reduce the possibility of false visits and ensure the authenticity and accuracy of visit data.

[0045] (2) The present invention automatically extracts and records the keyword information during the visit. These keyword information can reflect the actual situation and progress of the visit. By calculating the similarity between the keyword information extracted from the visit and the keyword information extracted from the assigned visit task, the integrity of the visit content can be effectively verified, and it can avoid the field staff from missing important information.

[0046] (3) During the whole visit process, the present invention only needs to involve a few QR code scans, and the rest are all system automated generation and verification processes, thus reducing the manual intervention links, improving the efficiency and accuracy of verifying the visit authenticity, further improving the management efficiency and reducing the management cost. Brief Description of the Drawings

[0047] Figure 1 It is a flowchart of the method for verifying the authenticity of field visits in the embodiment of the present invention. Detailed Embodiments

[0048] The present invention aims to provide a method and system for verifying the authenticity of field visits, which solves the problem in the prior art that the existing field visit authenticity verification scheme cannot accurately and efficiently verify the authenticity of visits. The core idea is as follows: By scanning the first two-dimensional code on the second terminal of the visited person through the first terminal of the field staff, the identity information of the visited person can be verified. And by generating a second two-dimensional code based on the identity information of the visited person and the keywords extracted from the visit task, the binding and matching of the identity of the visited person and the visit task can be achieved. The second two-dimensional code is sent to the field staff, and the field staff uploads this second two-dimensional code to the management system through the first terminal as the basis for starting the visit task; during the visit, the field staff uses the monitoring software on the first terminal to extract and record the keyword information during the visit in real time, timestamp it and then upload it to the management system. These keyword information can reflect the actual situation and progress of the visit. The management system generates a third two-dimensional code based on the identity information of the visited person and these keyword information, so as to bind the information in the actual visit process with the identity information of the visit person to record the relevant information of the entire visit process. This third two-dimensional code is sent to the first terminal of the field staff, and the visited person scans the third two-dimensional code through the second terminal and uploads it to the management system as the basis for ending the task. In addition, in order to identify whether the terminal is replaced during the visit, the mutual scanning of the outlines of the first terminal and the second terminal is required before the visit starts and at the end of the visit, and the results are uploaded to the management system. Finally, the management system determines the authenticity of this field visit based on the similarity calculation between the third two-dimensional code received from the second terminal and the second two-dimensional code received from the first terminal, and the comparison of the outline information scanning results received before and after.

[0049] Therefore, the present invention combines various technical means such as two-dimensional code scanning technology, terminal profile scanning, keyword extraction, and similarity judgment to conduct multiple verifications on the authenticity of field visits, which can effectively reduce the possibility of false visits and ensure the authenticity and accuracy of visit data. By automatically extracting and recording keyword information during the visit process, these keyword information can reflect the actual situation and progress of the visit. Calculating the similarity between the extracted keywords from the visit process and those from the assigned visit tasks can effectively verify the integrity of the visit content and avoid field staff from omitting important information. In addition, during the entire visit process, only a few two-dimensional code scans are involved, and the rest are system automated generation and verification processes, thus reducing the manual intervention link, improving the efficiency and accuracy of verifying the authenticity of visits, further improving the management efficiency, and reducing the management cost. Finally, through the recording of keywords during the visit process, these records are all corresponding to timestamps, which can clearly reflect each key node during the visit process, further improving the reliability of the data. At the same time, these data can be synchronously uploaded to the server for subsequent attendance management analysis. For example, managers can understand information such as the work performance, visit quality, and customer feedback of field staff by analyzing visit data, thereby providing data support for management decisions.

[0050] To implement the solution of the present invention, the systems and terminals required include: a management system, a first terminal, and a second terminal. Among them, the first terminal is used by field staff, the second terminal is used by the visited customers, and the management system is the field staff management system of the enterprise. Both the first terminal and the second terminal should have a camera and communication functions, and can perform two-dimensional code scanning, profile scanning, and upload to the management system. Therefore, both the first terminal and the second terminal can adopt portable devices such as smartphones and tablets. Among them, a monitoring software also needs to be loaded on the first terminal to collect corresponding information and extract keywords during the visit process, and to mark timestamps for the keywords and upload them to the management system.

[0051] On this basis, the corresponding functions of each part are realized as follows:

[0052] A management system is used to generate a first QR code according to the identity information of each person to be visited, and send it to the second terminal of the corresponding person to be visited; and, assign visit tasks to field staff, extract keywords from the current visit task, and generate a second QR code in combination with the corresponding information of the first QR code received from the first terminal, and send it to the first terminal of the field staff; and, generate a third QR code according to the keyword information during the visit process, in combination with the corresponding information of the first QR code, and send it to the first terminal of the field staff; and, judge the authenticity of the current field visit based on the similarity calculation between the third QR code received from the second terminal and the second QR code received from the first terminal, and the comparison of the contour information scan results received in the previous and current times.

[0053] A first terminal is used to receive visit tasks, scan the first QR code on the second terminal of the person to be visited in the current visit and upload it to the management system, and, receive the second QR code sent by the management system and upload it to the management system, confirm the start of the current visit task, and, use monitoring software to extract and record the keyword information during the visit in real time, timestamp each keyword information and upload it to the management system, and, receive the third QR code sent by the management system for the person to be visited to scan through the second terminal, and, perform contour mutual scanning with the second terminal, and upload the scanned contour information to the management system.

[0054] A second terminal is used to receive the first QR code sent by the management system for the field staff to scan through the first terminal, and, scan the third QR code on the first terminal of the field staff and upload it to the management system, and, perform contour mutual scanning with the first terminal, and upload the scanned contour information to the management system.

[0055] Embodiment

[0056] This embodiment provides a method for verifying the authenticity of field visits. See Figure 1 and its implementation process includes the following steps:

[0057] S1. The management system generates a first QR code and sends it to the person to be visited:

[0058] In this step, the management system generates a first QR code according to the identity information of each person to be visited, and sends it to the second terminal of the corresponding person to be visited.

[0059] In an exemplary embodiment, the first two-dimensional code can be a fixed two-dimensional code with a long-term validity period, which is applicable to scenarios where the identity of the visited person is valid for a long time and the access frequency is relatively high. The management system generates a fixed two-dimensional code for each visited person as their long-term identity credential. This two-dimensional code can be printed out and pasted on the workplace of the visited person or on the ID card carried with them, facilitating on-site staff to scan it at any time, or locally saved by the visited person through the second terminal, and can be called up whenever scanning is required. Although the fixed two-dimensional code is not as secure as the dynamic two-dimensional code, it is convenient for management and identification, reducing the cumbersome process of generating a new two-dimensional code each time.

[0060] In another exemplary embodiment, the first two-dimensional code can also be a temporary dynamic two-dimensional code. For example: The management staff of the enterprise sales department input the identity information of the visited customer through the management system, including name, contact information, company address, etc. The management system generates a dynamic two-dimensional code with a unique identifier based on this information. This two-dimensional code is temporary and will be regenerated for each task to ensure data security, which is applicable to scenarios that require high security and flexibility. This two-dimensional code not only contains the identity information of the visited person but may also contain specific information about the task (such as visit time, location, purpose, etc.). Since the two-dimensional code is dynamically generated and different for each task, this greatly improves the data security and anti-tampering ability. Once the task is completed, the two-dimensional code becomes invalid, avoiding information leakage and abuse.

[0061] The temporary two-dimensional code can be set with a specific validity period, such as being valid within 24 hours from the generation moment. Once the validity period is exceeded, the two-dimensional code will automatically become invalid, and even if scanned, the verification cannot be completed. In addition, the management system can also set a one-time use mechanism for the temporary two-dimensional code to ensure that the two-dimensional code can only be used once for each task, avoiding the security risks brought by repeated use.

[0062] S2. The on-site staff scans the first two-dimensional code and uploads it to the management system:

[0063] In this step, after receiving the visit task, the on-site staff goes to the visit site and uses the first terminal of the on-site staff to scan the first two-dimensional code on the second terminal of the visited person this time and upload it to the management system.

[0064] In an exemplary embodiment, before each visit, the management system assigns specific visit tasks to field staff, including: information of the person to be visited this time, visit location, visit time, visit purpose, target content to be communicated, and so on. The visit tasks will be sent to the first terminal of the field staff. After receiving the visit tasks, the field staff go to the visit site and use the first terminal to scan the first QR code on the second terminal of the person to be visited this time and upload it to the management system for the system to associate the visit tasks with the identity information of the person to be visited.

[0065] S3. The first terminal and the second terminal perform mutual profile scanning and upload to the management system:

[0066] In this step, in order to confirm the identity of the user of the terminal later, so as to judge whether the terminal is replaced during the visit and whether there are behaviors such as proxy upload, the first terminal of the field staff and the second terminal of the person to be visited this time need to perform mutual profile scanning, and upload the scanned profile information to the management system.

[0067] In an exemplary embodiment, when the field staff uses the first terminal to scan the first QR code on the second terminal of the person to be visited, both terminals will activate the built-in cameras to accurately scan the edge profiles of each other, including the overall shape of the terminal, the radian of the corners, and the possible layout of physical buttons or interfaces. The scanning of the edge profiles helps to identify the physical characteristics of the device and lays the foundation for subsequent device consistency verification.

[0068] In addition to the edge profiles, each terminal should also set unique identification features (such as QR codes, barcodes, serial numbers, or specific physical marks) in conspicuous positions (such as the back or side). These features are embedded during the production of the terminal, and each feature is unique. By scanning these unique identification features, the system can further confirm the identity and authenticity of the terminal. After the scanning is completed, the first terminal and the second terminal upload the recorded profile information to the management system for subsequent verification.

[0069] S4. The management system generates a second QR code and sends it to the first terminal:

[0070] In this step, the management system extracts keywords from the visit tasks this time, combines them with the corresponding information of the received first QR code to generate a second QR code, and sends it to the first terminal of the field staff.

[0071] In an exemplary embodiment, the management system extracts keywords according to the current visit task assigned to the field staff, such as product names, customer requirements, market feedback, etc., and combines the corresponding information of the first QR code received from the first terminal to generate a second QR code. Based on the second QR code, the association between the identity information of the visited person and the visit task can be realized, which is used as a voucher for the field staff to execute the visit task and is sent to the first terminal of the field staff.

[0072] S5. The field staff uses the first terminal to receive the second QR code and upload it to the management system:

[0073] In this step, the field staff uses the first terminal to receive the second QR code and upload it to the management system. After receiving the second QR code uploaded by the first terminal, the management system can know that the field staff is about to start the visit task, and thus marks the visit task as "started" in the system.

[0074] S6. The first terminal extracts and records the keywords during the visit and uploads them to the management system:

[0075] In this step, after the current visit task starts, the monitoring software on the first terminal of the field staff extracts and records the keyword information during the visit in real time, and uploads it to the management system after timestamping each piece of keyword information.

[0076] In an exemplary embodiment, during the visit, the monitoring software on the first terminal of the field staff will automatically extract the keyword information related to the task, such as the customer's feedback on the product, new demand points, etc. These keyword information should be able to reflect the actual situation and progress of the visit, and are uploaded to the management system after timestamping each piece of information. Based on the timestamp, it can ensure the immutability of the information related to the visit content and provide a basis for the subsequent judgment of the authenticity of the visit.

[0077] S7. The management system generates a third QR code and sends it to the first terminal:

[0078] In this step, the management system generates a third QR code according to the keyword information during the visit and combines the corresponding information of the first QR code. Therefore, the information in the third QR code includes the identity information of the visited person and the record information during the visit. This third QR code is sent to the first terminal of the field staff and will be scanned and confirmed by the visited person.

[0079] S8. The visited person scans the third QR code through the second terminal and uploads it to the management system:

[0080] In this step, the person being visited scans the third QR code on the first terminal of the field staff through their second terminal and uploads it to the management system. When the management system receives the third QR code, it marks the visit task as "completed" in the system.

[0081] S9. The first terminal and the second terminal perform mutual contour scanning and upload to the management system:

[0082] In this step, mutual contour scanning is performed again between the first terminal of the field staff and the second terminal of the person being visited, and the scanned contour information is uploaded to the management system, so as to facilitate the verification of the authenticity of the terminal attribution.

[0083] S10. The management system determines the authenticity of this field visit:

[0084] In this step, the management system determines the authenticity of this field visit based on the calculation of the similarity between the received third QR code and the second QR code, and the comparison of the scanning results of the contour information received twice before and after.

[0085] In an exemplary implementation, the management system extracts information content from the second QR code received from the first terminal and the third QR code received from the second terminal respectively. These information usually includes the specific content of the visit task, keywords, the identity information of the person being visited, and the time of task execution, etc. Then the extracted key information is compared one by one to analyze the similarity between the two. Specifically, it can be achieved through text similarity algorithms, such as cosine similarity, Jaccard similarity, etc. These algorithms can quantify the similarity degree between two texts.

[0086] If the content similarity is relatively high, it is initially considered that the visit is real. At the same time, a relatively high similarity also means higher integrity, accuracy, depth, etc. of the visit:

[0087] (1) Integrity: A high similarity means that the key information mentioned in the third QR code is relatively consistent with the information in the second QR code, which indicates that the field staff may have covered the task requirements more comprehensively during the visit without missing important information.

[0088] (2) Accuracy: A high similarity also indicates that the field staff may have understood the task requirements more accurately during the visit and been able to translate them into actual actions, which helps to ensure the accuracy and effectiveness of the visit.

[0089] (3) Depth: In addition to integrity and accuracy, a high similarity may also mean that the field staff had in-depth communication and interaction with the person being visited during the visit, so as to be able to understand the needs and situations of the person being visited more comprehensively, which helps to improve the depth and quality of the visit.

[0090] In addition to the similarity judgment, it is also necessary to verify the contour information scanning results received in the previous and subsequent times, that is, to determine whether there are false visit behaviors such as terminal replacement and proxy upload by judging whether the contour mutual scanning results of the first terminal and the second terminal are the same before and after the visit task starts and ends.

[0091] Finally, the management system combines the similarity judgment result and the contour mutual scanning results of the previous and subsequent times to judge the authenticity of the current field visit. If the similarity is lower than the threshold or the contour scanning results of the previous and subsequent times are inconsistent, it is determined that the authenticity of the visit is doubtful, and then the management personnel can be notified for handling and corresponding corrective measures can be taken.

[0092] Finally, it should be noted that the above embodiments are only preferred implementation manners and are not intended to limit the present invention. It should be pointed out that for those of ordinary skill in the art in the technical field, without departing from the spirit of the present invention and the scope protected by the claims, several modifications, equivalent replacements, improvements, etc. should be included in the protection scope of the present invention.

Claims

1. A method for verifying the authenticity of field visits, characterized in that, It includes the following steps: S1. The management system generates a first QR code according to the identity information of each person to be visited and sends it to the second terminal of the corresponding person to be visited; S2. After receiving the visit task, the field staff go to the visit site and use the first terminal of the field staff to scan the first QR code on the second terminal of the person to be visited this time and upload it to the management system; S3. The first terminal of the field staff and the second terminal of the person to be visited this time perform mutual contour scanning, and upload the scanned contour information to the management system; S4. The management system extracts keywords from this visit task and generates a second QR code in combination with the corresponding information of the received first QR code, and sends it to the first terminal of the field staff; S5. The field staff use the first terminal to receive the second QR code and upload it to the management system to confirm the start of this visit task; S6. After the start of this visit task, the monitoring software on the first terminal of the field staff extracts and records the keyword information during the visit in real time, stamps each keyword information with a time stamp and uploads it to the management system; S7. The management system generates a third QR code according to the keyword information during the visit and in combination with the corresponding information of the first QR code, and sends it to the first terminal of the field staff; S8. The person to be visited this time scans the third QR code on the first terminal of the field staff through their second terminal and uploads it to the management system; S9. The first terminal of the field staff and the second terminal of the person to be visited this time perform mutual contour scanning again, and upload the scanned contour information to the management system; S10. The management system judges the authenticity of this field visit based on the similarity calculation between the received third QR code and the second QR code, and the comparison of the scanning results of the contour information received before and after; 2. A method for verifying the authenticity of a field visit according to claim 1, characterized in that In step S1, the first QR code generated by the management system according to the identity information of each person to be visited is a fixed QR code or a temporary QR code; 3. A method for verifying the authenticity of a field visit according to claim 1, characterized in that In steps S3 and S9, when performing mutual contour scanning, the identification features preset on the other party's terminal are also scanned; 4. A method for verifying the authenticity of a field visit according to claim 1, characterized in that Step S8 further includes: after the management system receives the third QR code uploaded by the second terminal, marking this visit task as the completed state; 5. A method for verifying the authenticity of a field visit according to any one of claims 1-4, characterized in that In step S10, the management system judges the authenticity of this field visit based on the similarity calculation between the received third QR code and the second QR code, and the comparison of the scanning results of the contour information received before and after, including: By performing a similarity calculation on the information in the third two-dimensional code and the information in the second two-dimensional code using a similarity algorithm, if the calculated similarity value is greater than or equal to a preset threshold and the scanning results of the contour information received in the previous and current times are the same, it is determined that this field visit is valid; otherwise, the authenticity of this field visit is suspected.

6. A field visit authenticity verification system, characterized in that, Including: A management system for generating a first two-dimensional code according to the identity information of each person to be visited and sending it to the second terminal of the corresponding person to be visited; And, assigning a visit task to a field staff member, extracting keywords from this visit task, and generating a second two-dimensional code in combination with the corresponding information of the first two-dimensional code received from the first terminal, and sending it to the first terminal of the field staff member; And, generating a third two-dimensional code according to the keyword information during the visit process, in combination with the corresponding information of the first two-dimensional code, and sending it to the first terminal of the field staff member; and, judging the authenticity of this field visit based on the similarity calculation between the third two-dimensional code received from the second terminal and the second two-dimensional code received from the first terminal, as well as the comparison of the scanning results of the contour information received in the previous and current times; A first terminal for receiving a visit task, scanning the first two-dimensional code on the second terminal of the person to be visited this time and uploading it to the management system, and, receiving the second two-dimensional code sent by the management system and uploading it to the management system, confirming the start of this visit task, and, using monitoring software to extract and record the keyword information during the visit in real time, timestamping each keyword information and uploading it to the management system, and, receiving the third two-dimensional code sent by the management system for the person to be visited to scan through the second terminal, and, performing mutual contour scanning with the second terminal, and uploading the scanned contour information to the management system; A second terminal for receiving the first two-dimensional code sent by the management system for the field staff member to scan through the first terminal, and, scanning the third two-dimensional code on the first terminal of the field staff member and uploading it to the management system, and, performing mutual contour scanning with the first terminal, and uploading the scanned contour information to the management system.

7. A system for verifying the authenticity of a field visit according to claim 6, characterized in that The management system includes: A task assignment module for assigning visit tasks to field staff members; A keyword extraction module for extracting keywords related to the task from the visit task; A first two-dimensional code generation module for generating a first two-dimensional code according to the identity information of each person to be visited and sending it to the second terminal of the corresponding person to be visited; A second two-dimensional code generation module for generating a second two-dimensional code according to the keywords extracted from the visit task, in combination with the corresponding information of the first two-dimensional code received from the first terminal, and sending it to the first terminal of the field staff member; A third two-dimensional code generation module for generating a third two-dimensional code according to the keyword information during the visit process, in combination with the corresponding information of the first two-dimensional code, and sending it to the first terminal of the field staff member; The visit authenticity verification module is used to determine the authenticity of the current field visit based on the similarity calculation between the third two-dimensional code received from the second terminal and the second two-dimensional code received from the first terminal, as well as the comparison of the contour information scanning results received in the previous and current times.

8. A field visit authenticity verification system according to claim 6, wherein the visit authenticity verification module is specifically configured to calculate the similarity between the information in the third two-dimensional code and the information in the second two-dimensional code by using a similarity algorithm. If the calculated similarity value is greater than or equal to a preset threshold and the contour information scanning results received in the previous and current times are the same, it is determined that the current field visit is valid; otherwise, it is determined that the authenticity of the current field visit is doubtful.

9. A field visit authenticity verification system according to any one of claims 6-8, wherein identification features are provided on both the first terminal and the second terminal.

10. A field visit authenticity verification system according to claim 9, wherein the identification features include: a two-dimensional code, a bar code, a serial number or a physical mark with uniqueness.

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