BrainCo (China) has created a device for teachers to monitor students’ concentration. This led to a wave of criticism from parents and social networks. At Chinese schools, teachers use technology to manage students is common. These include the placement of cameras to identify faces in the classroom, asking students to wear GPS uniforms and wearing radio trackers. Recently, on the social network Weibo continue to appear images of elementary students must wear brain waves scanner on their heads. This has led to criticism of netizens and parents. According to SCMP, BrainCo has created these rings. The device displays the concentration of students by reading brain waves. After analysis, it will generate the results with the light in front. Blue means relaxation, yellow is concentrated and red is very focused. Teachers can also monitor each student’s attention level through the accompanying phone software. “Thank goodness I have graduated”, a comment of the post on this device on Weibo. “If my daughter goes to school using this device, I will let her leave school,” a Chinese parent protested. In response to criticism on social media, BrainCo has stated that it only provides auxiliary equipment for concentration training courses in schools. The company also said it did not sell products to public schools but only used free trials. On the other hand, this brainwashing technology is not as high as everyone thought. Using electroencephalography (EEG), a specialized device can measure the impulses of human brain waves. For decades, hospitals have used EEG to monitor conditions such as brain disorders, seizures or injury. However, in China, this technology began to appear rampant on consumer devices capable of determining the mental state of users. Although there are studies that show EEG technology can be used for this purpose, the results will be inaccurate. Many environmental factors, such as sweat and muscle movement, can lead to erroneous results. BrainCo is a company founded by Chinese engineer Bicheng Han in the United States. Over the past three years, the company has exhibited many products at the Consumer Electronics and Consumer Electronics Show in Las Vegas. Earlier, BrainCo was noticed by the Chinese media when a female pianist used a fake hand (controlled by the mind) on the reality show of CCTV.