11:11 is a social APP for college students based on campus geographical location authentication. Users can use this software to match college students from the same school or even across the country based on their own selection of matching conditions at 11:11 every night1. The software is dedicated to campus socializing, anonymous and safe. The system randomly matches users to make friends at 11:11 every night, and both parties have a limited time communication opportunity of 11 minutes and 11 seconds. If both parties like the other party, they can keep the chat information and see the other party's real-time campus location the next day. At the same time, the software has launched modules such as "Xianxianda Community", "Xianxianda Daily" and "Selected Articles" to meet the social needs of college students.