| 摘要 |
<p>An embodiment of the present invention provides a missing child preventing system comprising: at least one auxiliary terminal which performs wireless communications with at least one main terminal and is matched with the main terminal; an application server which provides an auxiliary terminal recognizing application to each of the main terminals; and a main server which separately performs wireless communications with the main terminal and the auxiliary terminal, receives matching information on the main and auxiliary terminals, and receives distance information between the matched main and auxiliary terminals.</p> |
