1. A content providing server system comprising: a memory storing a digital representation of an article of interest obtained via a mobile device; and an identification server coupled with the memory and configured to: extract salient characteristics from the digital representation; recognize at least one target of interest related to the article based on the salient characteristics; identify content information pertinent to the target of interest and related to the article, the content information available via at least one information address; and enable the mobile device to access the content information over a network and via the at least one information address, and to present the content information via a display.