Smart watches used to be a “must-have” accessory in the technology industry. However, the wearable device market has declined in the past year and will become smaller. According to foreign media reports, the German Federal Internet Agency has banned the sale of children's smart watches in the country.

　　Smart watches for children are nothing new. A number of different companies have sold smart watches with basic functions to children, such as simple phone calls and GPS tracking. These functions are usually controlled by apps downloaded on the parents’ mobile phones.

　　 However, the potential safety hazards of these features have also been exposed. As early as October last year, the Norwegian Consumer Council discovered that some children’s smart watches would not encrypt the data they store or send to their parents’ mobile phones, which would bring some security risks to children wearing devices.

　　Due to the lack of encryption technology, hackers can easily hack into smart watches, which may make it easy for a malicious person to track down a child. In other words, they can easily find a child wearing a smart watch, and then imitate the device, so that they can send the wrong location information to the parent.

　　Other features also bring privacy risks. Some children’s wearable devices use microphones to allow parents to hear the child’s environment. Jochen Homann, chairman of the German Federal Network Agency, said that watches using this function should be regarded as "an unauthorized communication system". The reason is that some parents listen to the teacher's lecture through the child's watch in the classroom, and the teacher does not Not knowing.

　　 For these reasons, the German Federal Network Agency has completely banned smart watches for children and urged parents who own such smart watches to discard them immediately.