In order to ensure the security of users' personal information, Duoduo software adopts strict user authentication and information protection mechanisms. Yuduoduo Software was developed by Sichuan Yichengmei Network Technology Co., Ltd., which aims to provide users with a "sincere, green and healthy" environment for making friends. Users can chat instantly and communicate online in the encounter App, and also have the opportunity to meet new friends or potential partners through the nearby random matching function.