Search user name. According to the information of official website of Instant Matching (Shanghai) Network Technology Co., Ltd., in jspp, friends can only be added by searching user names, so foreigners can be added by searching user names. JSPP- Chat and Dating Software is a product of Instant Matching (Shanghai) Network Technology Co., Ltd., which is an end-to-end encrypted communication and a voice social chat and dating software in burn after reading. It supports multi-device synchronous chat records and provides users with privacy and security instant messaging services.