A method, system, and client are provided. The method includes performing a multipoint login to a same communication account from a first client and one or more second clients; in response to a data sharing instruction, acquiring local data at the first client as shared data; selecting one or more of the one or more second clients and acquiring an address identifier of each selected second client; and transmitting wirelessly the shared data from the first client to the selected one or more second clients using the address identifier of the second client.