What is written on the paper, how fast the pen is written, and even the duration of the homework, the pen can “monitor” at any time, turning it into evidence of catching fish and making mistakes.
What, can’t show the handwriting? It doesn’t matter, someone will help you debug right away:
Some netizens reposted that if it breaks directly, you need to buy another one at the original price, and hollow out a few hundred yuan for pocket money:
In the teacher’s background system, you can also view the completed homework in real time, and you can even announce it in the parent group at any time…
Are you already a little worried?
This incident caused an uproar on the Internet. Many students said that their schools are also using this kind of pen. At present, there are alreadysome areasA pilot application is underway.
Some netizens ridiculed: “The teacher has a long telescope that can look all the way to your home.”
However, some netizens believe that teachers also do not want such equipment, and “break time is gone”.
So, how exactly does this pen “monitor” handwriting on paper?
How to “Monitor” Handwriting on a Workbook
This pen is calleddot matrix pen, but there are also names such as “smart pen” and “Ma Liang pen”.
Specifically, it consists of a high-speed camera, refill/pressure sensor, processor, battery, memory, and a Bluetooth receiver (or USB interface).
It will take pictures at the tip of the pen through a high-speed camera (≥100Hz). After processing by the chip, it can display the handwriting and the efficiency of the pen, and transmit it to the electronic device through Bluetooth or WiFi.
The reason why the monitoring of handwriting is so effective mainly depends on the backgrounddot matrix technology。
In order to recognize the user’s handwriting more accurately, the dot matrix pen is usually used with a special paper.
this paper is calleddot matrix paper, if you zoom in on the photo, you will find that there are many closely arranged dots printed on it (for example, some are around 1200dpi), showing a seemingly irregular pattern:
Picture source Taobao users
So what is the use of this irregular pattern?
We found the corresponding technical details on the official website of a smart dot matrix pen company invested by Tencent.
In fact, this seemingly irregular lattice pattern is the core of lattice technology.
On the dot matrix paper, every 36 dots constitute a minimum data unit (only 3m㎡), each dot has a diameter of 50 μm and a spacing of 300 μm. Among them, each point can have four different offset positions: up, down, left and right.
There are 4^36 (about 47 trillion) arrangements of data units for every 36 points and an average of 4 points per point to ensure that the coordinates do not overlap.
In this way, when we write with this pen, we first use a high-speed camera to take pictures at a speed of more than 100 times per second to identify the lattice coordinates, and even the handwriting path, pressure parameters and writing speed and other information will also be recorded at the same time. down.
Judging from the official websites of various dot matrix pen products, there are schools all over the country using such dot matrix pens.
For example, according to the cover news, a middle school in Pengzhou took the lead in launching a dot matrix pen pilot program in the eighth grade:
Relying on artificial intelligence and big data technology, such digital technology can realize accurate research and judgment on students’ classroom process learning effect, and help teachers optimize subsequent teaching methods.
while at homeeducateOn the official website of the technology company, you can also see the corresponding dot matrix pen products, but they are only used for classroom interaction.
The official website shows that the company has reached cooperation plans with more than 20 schools in Guangdong.
On the official website of another company, it shows “smart teaching solutions and data services based on pen and paper data”, which has served more than 6,000 schools and more than 100,000 teachers.
What happened to the post-00s being monitored by AI?
But goose is more than just handwriting.
This class after 00, evenmood、computer screenEvenbrain waves, may be detected.
For example, in April this year,IntelI just came up with an emotion detection AI and used it to detect studentsonline classFeelings of the times (yes, that’s how they are).
The system assesses students’ facial expressions and interactions to determine if they are bored, confused or “wandering.”
If it detects that you are not concentrating enough, the computer will report to the teacher: This person is actually distracted!
Not only that, amillionsGoGuardian, an online course software used by American students, even allows teachers to remotely control the computers of opposite students.
During the online class, teachers can not only see the faces of the students, but also see the live screen of all the students.
If it is found that the student’s interface jumps to the game or video, the teacher will send a private message to remind the student to continue to listen carefully. If the student does not change repeatedly, the teacher can remotely control his computer.
But in the face of the following invention, the remote control of the computer is also a small case.
A technology company in Guizhou has developed a “smart school uniform”, this school uniform is the same in style and appearance as ordinary middle school uniforms, but a smart chip that can record biometric data and a GPS chip that can be positioned at any time are sewn under the left and right shoulders.
Source: Sky Eye News
In addition, this school uniform is also equipped with an APP, on which parents can keep track of their children’s trajectory in school and view their children’s school videos.
According to the Global Times, after subsequent upgrades, this smart school uniform will have a series of functions online, such as an alarm that will automatically sound when a student is “detected” when dozing off, and even a smart payment system.
After students complete the payment on campus through smart school uniforms, fingerprints, or face recognition, parents cancell phoneCheck the consumption situation and even take “mandatory prohibition of consumption measures”.
Does it feel like you’re under a spell? Don’t worry, the “True Binding Curse” is below.
Earlier, primary school students in Zhejiang were also put on “smart headband”。
The so-called “smart headband” is actually a headband with a brain-computer interface, which can detect brain waves, judge the degree of concentration of students in class, and give out scores. Send it to the parent group.
Source: The Paper
Although the company responded that the product is a concentration training system, not a monitoring system, and does not need to be worn for a long time, it still caused strong doubts from netizens.
Many education experts also expressed their objections. Professor Xiong Bingqi, vice president of the 21st Century Education Research Institute, pointed out that the practice of making students wear smart headbands is to treat students as a learning tool, and is based on so-called technological innovation and educational innovation. Named anti-education.
Finally, under the pressure of public opinion, the local education bureau announced that it had suspended the use of “smart headbands”.
Coincidentally, in the same year, the smart campus informatization procurement project of a middle school in Guangdong also aroused heated discussions. The school purchased 3,500 electronic bracelets that can monitor student behavior data, which was questioned by netizens for violating students’ privacy.
According to the bidding documents, this electronic bracelet can display heart rate in real time and provide accurate exercise data (even including the number of hands raised); it can record the wearer’s steps and heart rate data in the off-campus area; it can also display the wearer’s location in real time. Location.
Seeing this, some people may wonder, where does the purchase cost of these equipment come from?
How should technology be used?
According to the “Ten-Year Development Plan for Educational Informatization (2011-2020)” issued by the Ministry of Education in 2012, governments at all levels should list education informatization funds at a rate of no less than 8% of their educational expenditures.
In 2019, the domestic investment in education has exceeded 5 trillion yuan, and 8% is 400 billion yuan. In other words, the smart campus is a huge market of 100 billion yuan.
Source: Zhongyan Puhua Industrial Research Institute
In recent years, many artificial intelligence companies and Internet giants have poured into this field. Although the original intention is good, there have been some deviations in actual operation. The application of some new technologies has made students more and more uncomfortable.
As the Beijing News Express said:
It is not a bad thing for science and technology to help education and learning, but it is also necessary to fully consider the attributes of technology’s “double-edged sword”. Do not let the dot matrix pen, a tool that ostensibly “reduce the burden” for students, becomes a “shackle” for “increasing the burden” of students, let alone cause hidden dangers to information security.
Returning to the dot matrix pen, the use of dot matrix technology is not limited to monitoring handwriting.
For example, domestic use of this kind of dot matrix pen is used for AI practice and painting; foreign companies such as NEWYES also use this technology for electronic handwritten notes or formula recognition.
Well, there are also direct use of it to “share” homework with classmates. (manual dog head)