The present patent application is directed to a smart signage system. In one aspect, the smart signage system includes at least a signage device; at least a signage display being connected to the at least one signage device and configured to display contents stored in the signage device; and a plurality of client devices being in wireless communication with the at least one signage device. Each client device is configured to recognize a gesture from a user in correspondence with a target content displayed on the signage display, and thereby to acquire a file of information associated with the target content from the signage device.