On November 11, when a reporter from China business daily looked at the face recognition machine of a university in Beijing for the first time, a name surnamed Liu appeared on the small screen. At the same time, the barrier door opened automatically. After 3 seconds, after the door closed, the reporter looked at the screen again, the screen showed “not registered”, the door did not open. Gao Jian, a security guard beside him, saw it and told reporters that he had encountered a similar situation. Once, after looking at the screen, he was identified as a man named “Wang Shuai”.

This artificial intelligence application, known as face recognition, has been sought after by capital in recent two years. It can be seen in some shopping malls, campuses, residential areas and airports. However, the reporter found that at this stage, some face recognition application effect is not as expected. It is faced with many challenges, such as user behavior, technology maturity and limited application occasions.

Payment habits are hard to change

Face brushing payment is an application field with commercial value in face recognition.

Near Beijing’s thatched cottage subway station, it’s not easy to find retail stores that use face brushing equipment“ Convenience bee uses a self-service cashier system, while 7-11 uses code scanning and cash payment“ “The whole time” convenience store and the “taste and beauty” bakery seem to be the two shops in the vicinity of the brush payment machine, which have introduced the Alipay Dragonfly system.

The reporter came to Chaoyang Joy City shopping mall, where youth culture is highly respected. The face brushing payment equipment here is scattered in the catering area of the shopping mall, and is basically installed in 2019.

Ye Wentian, a public relations personage at Alipay, told reporters that the situation seen by reporters online is related to the fact that Alipay’s brush face payment has “really not progressed to that point”.

The market development of Alipay brushing equipment is mainly based on the cooperation with brands, such as the supermarket chains such as Bu bee lotus, Carrefour, WAL-MART and so on. Alipay does not have the way to play the city, Alipay can provide large screen equipment for large business. In addition, dragonfly small face brushing equipment is on sale in tmall flagship store. Most of them are priced at 1699 yuan, which is suitable for small businesses. Although Alipay brush payment is open to all industries, there are many users in the retail industry.

However, it is difficult to promote the face brushing equipment for users“ We don’t push it. Some people like it and some people don’t like it. ” The manager of duole day told reporters.

Dariy queen, a clerk in Chaoyang Joy City, told reporters that face brushing devices are generally used when customers take the initiative to use them. But this kind of situation often occurs when there are full reduction activities. The reporter saw that the wechat screen showed that if you use wechat to brush your face for the first time, you will get 5 yuan less than 10 yuan.

Burger King seems to be at its best. Many customers are willing to order on the big screen, and an employee walks in the lobby to guide the use. But the reporter noticed that when the last step, prompt choose scan code or brush face, many people will still open the payment QR code.

The Burger King inspector told reporters that four or five months ago, when Alipay was applied to the shop, the company optimized the system for burger king. Now it can use coupons on the big screen, and it can recognize the face in 4 seconds. In addition to the slow delivery of small tickets and no discount at present, there is nothing inconvenient about big screen. In the future, Burger King also hopes to promote big screen ordering, leaving the front desk for the elderly to order and pay. According to the inspector’s observation, 50% of customers use code scanning and 50% use face brushing.

“Some people think it’s not safe to brush their face, because they have to tie their mobile phone number to brush their face, and some think it’s troublesome.” Dariy queen, a shop assistant, told reporters that according to her current work experience, the use of code scanning, cash and other means of payment is enough to cope with the peak period.

A customer at Burger King is a lawyer who chooses to pay by scanning the code. He told reporters, “scanning code is similar to brushing face, and from the perspective of face, it’s not good to have too many faces. It’s actually a bit of a problem to get your face information.” He is mainly concerned about where the data is transmitted and which database to compare with.

“The data of this face, how to store it, how to protect privacy in Alipay account. If someone steals data, it’s a terrible thing. ” The customer mentioned that the face that has been 3D printed in Hollywood movies can be used to do many things, and the domestic 3D printing technology is also developing. So he can’t trust big companies. At the same time, he said that customers in the non lawyer industry may not pay much attention to this aspect.

There are two main reasons why the face brushing equipment has not been widely expanded. One is that face brushing equipment is not as cheap as two-dimensional code. Second, new things have a development cycle. It took Alipay four or five years to popularize two-dimensional code, but in August 15th last year, Alipay began to announce the commercialization of brush payment. It has only been a year since.

What's new about face recognition

“For these two reasons, it may not be as overwhelming and ubiquitous as it is. It is still in its infancy and may be a trend. ” According to the survey, users are reluctant to use face brushing payment, and habit is the first reason, ye said“ Four or five years to develop the habit of scanning code, you let him to brush his face, he will be very uncomfortable, very uncomfortable, he does not want to change

“Compared with face brushing and code scanning, more than 20% of people brush their faces, and 80% still use cash and code scanning. Therefore, it is in a primary stage, and it is still in a preliminary stage in terms of its number of shops, as well as people’s usage habits and acceptance. It doesn’t have the volume of a two-dimensional code, and it can’t be compared. ” Ye Wentian said.

Because face recognition uses biometric technology, its security is higher. Ye Wentian told reporters that after collecting the user’s face data, Alipay will delete it after 12 months. It is reserved for 12 months because there is evidence to check if there is a dispute between users during the period. He said that at present, the leakage of facial information is relatively rare. If the user is stolen, he can contact the staff to get compensation, and the enterprise will give the user the bottom story.

The school is still testing the running in

In addition to face brushing payment, other applications of face recognition are still in the “try new” stage.

Beijing No.20 middle school (hereinafter referred to as “No.20 middle school”) and Peking University (hereinafter referred to as “Peking University”), which started to implement face recognition access control equipment in 2018, have indeed reduced part of the workload of security, but the role of manual work is still obvious.

Many gates of Peking University are equipped with face recognition gates, which are provided by Hanbai technology. Even so, most of the teachers and students still choose to take the artificial channel. A security guard at the southeast gate of Peking University said: “the proportion of face brushing is less than half of the total number of students, and it will take time to cultivate the habit.” In the 20 middle school, at present, when students go to school in the morning, they usually don’t go through the gate to enter directly. When students go out from the gate after school, parents can receive prompt messages.

At 5:25 p.m. on November 11, at the southeast gate of Peking University, nine people brushed their faces and entered within a minute. One of the girls failed the verification twice before changing a gate, which lasted about ten seconds. In the follow-up, the three people only entered after two or three times of verification, and several people turned to the artificial channel after the verification failed.

At 5:41, a boy was brushing his face on a bicycle. After the first test failed, he tried to smooth his hair, but still failed. He helped his glasses for the third time and succeeded.

Liu Shui (pseudonym), a face recognition service, told reporters at the southeast gate of Peking University that at present, the angle and light of such devices will affect the recognition efficiency. In the afternoon, the light shines from the west, and the face recognition is faster. In the morning, the recognition efficiency will be reduced when the light is backlight. At the same time, the recognition of people with obvious facial features will be faster.

As for the recognition efficiency of the above face recognition equipment, as of press release, Hanbai technology has not made a response. Peking University told reporters that it is still in the testing stage and can not respond.

Although there are still many problems mentioned above, the security guards think that the face brushing method is more convenient, which reduces the work pressure and makes it easier to verify the identity. If it is the card brushing method, it is impossible to determine whether it is me or not, and the school card may be lost, falsely claimed and borrowed“ We hope that teachers and students in school can brush their faces. We just need to deal with visitors outside the school A security guard at Peking University said.

In No.20 middle school, the entrance guard for face recognition is provided by Hikvision. According to the security guard, the equipment occasionally broke down. On the windy day of November 13, the equipment fell into failure again, and the security guard blocked the gate with yellow roadblocks. The gate of Zhongchuan south gate, also provided by Hikvision, also failed on the night of November 14. As of press release, Hikvision has not made a reply to the problem.

In Peking University, a two-dimensional code is placed at the bottom of the face recognition screen with the words “can’t recognize, please scan and I’ll remake”. After scanning the code, you will enter the page of Peking University Computing Center. On November 14, at the South Gate of Peking University, a resident engineer of Hanbai technology was upgrading the equipment. As for the problem of light affecting recognition, he demonstrated to reporters that the reason is that the screen protector is a glass plate, which is easy to cause reflection, and it will be improved if the plastic plate is replaced later.

The person in charge of the information center of No.20 middle school, surnamed Hu, believes that this technology still has security risks“ The current algorithm determines the security risk. Now it’s application first and security second. Financial system and other occasions with high security requirements, the technology at this stage certainly can not meet the requirements. The algorithm of face recognition at this stage does not operate according to the biological characteristics of human beings. At present, face recognition is mainly image comparison, which is planar. “

In addition to access control, 20 in this year also used face recognition dining system.

The system is provided free of charge by Lenovo and is bound with parents’ bank cards. Parents need to make an appointment on the app one week in advance for their children’s daily menu for the next week. They can pick up their meals through the face brushing device during meals, which saves the need to order meals on site. At the same time, students can realize face brushing payment in the canteen.

According to the introduction, the school took the initiative to find Hikvision for the face brushing access control system, while Lenovo took the initiative to find them for the dining system“ Others always find us in the canteen, and we don’t spend money. We are willing to introduce a number of manufacturers to do some horizontal comparison. ” The people in the 20 middle schools said.

Many students think that after using the system, it is 5-7 minutes faster than the original meal mode. From the perspective of the school, the amount can be controlled in advance to avoid waste. But on the other hand, some students reported that the face recognition efficiency of the system is 5-6 seconds, which is slower than the face brushing device at the door. Lenovo did not respond to this.

But Mr. Hu also admitted that the original system can be solved by face or swipe card, but at this stage, the school “hopes to push face first, and hope everyone can use it first”.

When asked about the whereabouts and security of information, Mr. Hu stressed that the school has its own data center, which only provides an interface for manufacturers, and the data is stored in the school’s server. The reporter called the information center of Peking University as a student, and the staff of the other party said that the data was stored in the local server. In a kindergarten visited by the reporter, the data is stored in the manufacturer, but the sales staff of the equipment manufacturer said that the storage place can be selected.

In the field of kindergarten, smart security has been mentioned for a long time, but in fact, according to the reporter’s understanding, there are not many kindergartens applying face recognition devices in Beijing.

A kindergarten in Haidian District used the face brushing access control system. At the beginning of its establishment, the security company recommended the system to them, indicating that face recognition is a popular way nowadays.

Above the gate, there are two face recognition screens, one high and one low, for adults and children respectively. In the classroom, a broadcasting machine is installed to display the information of children’s transportation in real time. Parents and children entering the system will be photographed in real time by the system when they pass through the gate. Both parents and teachers will receive prompt messages on their mobile phones, and the broadcaster will also display when and by whom the children are picked up.

On the same day, when demonstrating to reporters, the teacher opened the access control by brushing his face, and the system took a picture of the reporter and the teacher standing together at the same time, which was displayed on his mobile phone.

At the same time, the system input the information of parents and children. As long as one of the children and parents is identified, they can enter and exit. In order to be more safe, the face recognition gate is only used when parents send their children into the park. When they pick up the children, the teacher still takes them out and hands them over to the parents in person.

“I don’t think the reliability of machines is as good as that of human beings. What I’m most afraid of now is that there are fake collars in the process of picking up children. Because once he takes it away, he may not be able to get it back. ” Said the teacher.

As for the function of the system, the teacher said frankly that people need to watch it all the time, and it can’t be fully automated“ After the installation of this system, the best place is to let parents rest assured. There is such a barrier, parents will feel more at ease, outsiders can not easily enter the garden

Hu believes that the current card technology is more mature and should be safer than face brushing“ Our school card is CPU card, there is encryption algorithm, can not be forged. At present, face recognition equipment is easy to be cheated. “

He believes that at this stage, face recognition, including recognition speed and recognition security, needs to be improved, and the height of the equipment is not suitable for users, indicating that the fixed installation method has problems and needs to be further improved.

Access control “brush face” is not just needed

In Beijing, residential areas and office buildings have tried to install face recognition system for access control.

A new type of access control system was installed in an office building in ZhongGuanCun on October 1 this year. Lin Xiaoying (a pseudonym) usually sits at the front desk next to the access control. She has worked here for two years and is very familiar with the faces of employees coming and going. The new access control system, namely face recognition system, is more prone to the problem of “unable to recognize people”.

Lin Xiaoying said that the system only uploads a photo as a basis. When employees are denied face recognition access, it also means that they need to upload a new photo. According to Ma Zaiyan, the customer manager of Zhejiang Dahua Technology Department, the system of public security tracking fugitives can compare the photos taken a few years ago or even 10 years ago with the face images now appearing. The accuracy of face recognition applied in access control scene is not high.

Bai Cheng (a pseudonym) is a security system integrator with five years of working experience, whose main focus is on the scene of community access control.

He is not satisfied with the accuracy of some static face recognition technologies currently used in access control / attendance, which mainly collect feature points on a static photo. He believes that more accurate and dynamic face recognition technology is the future development trend of access control system“( The low end is still used by people because it’s cheap. ” Bai Cheng said.

In addition to the problem of accuracy, what bothers Lin Xiaoying is the “congestion” that may be caused when the flow of people increases.

The face recognition system in Lin Xiaoying’s office building is also the attendance system of employees, so employees have to brush their faces to complete the work assessment. When it comes to commuting time, the flow of people becomes larger, and every employee needs to wait for the gate to open and close before leaving. This creates congestion.

Therefore, the access control gate of Lin Xiaoying’s office building is equipped with “non face brushing channel” and “face brushing channel”. When there are many people or VIP customers going in and out, they will directly pass through the “non face brushing channel” in the middle, and the width of the setting is also larger. On both sides, there are narrow face recognition channels.

Lin Xiaoying told reporters that they are using “simolo” products. The reporter also saw relevant news reports on the Internet. On November 15, the customer service staff of simolo Beijing Branch told reporters that simolo only provides the gate, while the face recognition technology comes from Shangtang technology and Kuangshi technology. The reporter continued to call the headquarters of simolo, namely Shenzhen simolo Intelligent Technology Co., Ltd., and the other side said that which face recognition technology to adopt depends on the integrator, while simolo is only the manufacturer of the gate. The public relations staff of simolo also told reporters that “they don’t do face recognition.”.

Face recognition seems to bring convenience to some elderly people in kanghongruipu community of Chaoyang District. This community has only one building, but it was selected as one of the 12 “smart communities” in Beijing as early as June 2017. When the reporter went to interview before November 13, he also saw three security personnel on duty. The iron door next to them is connected with the face recognition and swipe card system. Face recognition and swipe card can go in and out.

An elderly resident told reporters that he didn’t think much about safety, but felt that the good thing about face recognition was that he might forget to bring his card or key and brush his face directly to get in and out. Another elderly resident of the community also thinks that face recognition “liberates both hands” so that it can open the door by walking directly.

However, face recognition access is not the only way to open the door, nor is it the only convenient way.

On November 13, when the school was over, the reporter came to the gate of Hong Ruipu community, only to see one after another parents riding electric cars carrying their children home, and the parents were wearing thick masks and scarves. The face recognition system didn’t seem to be useful. The security guard quickly opened the iron door through the control button on hand.

The security staff told reporters that residents can not only recognize faces, but also swipe cards to enter. However, the reporter observed that in most cases, the security guards will directly help open the door.

Ma Zaizhan is not optimistic about the application prospect of face recognition technology in access control“ In the whole weak current system (an integral part of residential buildings), security plays the lowest role. In the security system, entrance and exit access control plays the lowest role. ““ Zhejiang Dahua, Hikvision, and many small manufacturers are also doing it, but to be honest, it’s a small scene. ” Ma zaishan said.

Whether in the office building or the community, the entrance guard also retains the responsibilities of security and front desk while installing face recognition equipment. As in the past, the security and front desk need to ensure that the entry and exit personnel are internal personnel. They also need to help the personnel brush their faces for attendance, and deal with the problems in time when the face recognition equipment cannot recognize the portrait.

“You can’t rely on technology to solve all the problems and replace all the artificial functions. People need to complement the artificial intelligence system. Even some jobs can work without the artificial intelligence system, but with the artificial intelligence system, you need to add such an extra person. Maybe the work of 100 people has become my own work, but there will be people involved in it. ” Ma zaishan said.

At present, face recognition access control can not be “independent”, but also faces challenges. Recently, Guo Bing, a distinguished associate professor of Zhejiang University of technology, sued Hangzhou wildlife world on October 28, 2019 for compulsory collection of plaintiff’s face information. As the first case of face recognition privacy, it has aroused multi-party concern.

The changes brought about by the new attempt remain to be seen. In the field of transportation, Didi company may consider introducing face recognition technology. The reporter learned from a driver of didi special car that the camera installed in the special car seems to be able to recognize his state. When he yawns, the app reminds him. The reporter inquired Didi’s public relations personnel about this matter and learned that didi has designed a fatigue driving warning system in the vehicle video equipment, which can automatically process and analyze the images in the equipment, detect the frequency, frequency and duration of yawning and open eyes of drivers in different time intervals, and remind drivers to pay attention to driving ventilation before they enter the fatigue state Rest in time to avoid fatigue driving.

Editor in charge: CT

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