1. A method for sharing information among multiple devices, comprising: sensing, by a sensing device, signals of at least one object associated with a targeting device; extracting, by the sensing device, at least one feature of the object from the sensed signals; broadcasting, by the sensing device, the extracted feature of the object on a determined network containing a plurality of targeting devices; receiving, by the sensing device, feedbacks from the plurality of targeting devices on the network in response to the broadcasting; based on the received feedbacks, automatically identifying, by the sensing device, one of the plurality of targeting devices; synchronizing, by the sensing device, information with the identified targeting device; and displaying, by the sensing device, the information to a user of the sensing device.