Mobike can locate, is it GPS? Do you know where the bike is? Why can't this technology be used on children's watches to prevent them from being lost?

Not only can GPS locate itself, but everyone can locate your GPS after deciphering your serial code. Do you believe this thing will be used on children? You saw the child, so can others. CCTV reported a similar incident. Moreover, the positioning of the base station is not accurate (almost 1 km accuracy), while the positioning of the GPS (10 m accuracy) is more accurate, so it is useless without satellite signal when entering the room. Therefore, parents of children's watches now have different opinions on the positioning function, and it is still possible to know a general orientation.

Extended data GPS is the abbreviation of English global positioning system. GPS was started as a project of the US military in 1958 and put into use in 1964. In 1970s, the United States army, navy and air force jointly developed a new generation of satellite positioning system GPS. The main purpose is to provide real-time, all-weather and global navigation services for land, sea and air, and to be used for some military purposes such as intelligence gathering, nuclear explosion monitoring and emergency communication. After more than 20 years of research and experiments, it cost 30 billion dollars. By 1994, 24 GPS satellite constellations with global coverage of 98% have been deployed. In the field of machinery, GPS has another meaning: geometric product specifications (GPS for short). Another meaning is G/s(GB per second). GPS (General Processor Sharing) is a special term in processor sharing and network service quality control.

Reference: Baidu Encyclopedia -GPS