Method, server, and system for obtaining navigation information

A backend server comprising one or more processors, memory, and one or more program modules stored in the memory and to be executed by the one or more processors, the one or more program modules comprising:

• a receiving module, configured to receive a first obtaining request of a client device, the first obtaining request at least containing navigation key information and a public account wherein the public account ID is registered on the backend server;
• a target database determining module, configured, according to the public account ID, to determine a target public account database that comprises a public account database corresponding to the public account ID, the target public account database comprising the navigation key information and corresponding navigation information;
• a navigation information obtaining module, configured, according to the navigation key information, to obtain navigation information corresponding to the navigation key information from the target public account database;
• and
• a sending module, configured to send the obtained navigation information to the client device to display the obtained navigation information;
• wherein:
• the backend server is further configured to support instant communications among a plurality of client devices;
• and
• the client device displays the obtained navigation information as an incoming communication message.