In this paper, image recognition is used to link a picture to relevant information. As mobile camera phone becoming more and more popular, applications for these phones will bring value to the phone and convenience to the users. We develop a system to perform audio introduction for our technology showroom using images taken by the built-in camera of mobile phone. Visitors to the showroom can take a picture of a poster, a physical prototype or any materials using their mobile phone. An audio introduction in his favorite language will be delivered to the visitor. A few schemes are used to improve the accuracy and system reliability, which include discriminative feature selection based on feature distance; repeating queries if result is not correct; user's verification on delivered content; employment of multiple classifiers. Experimental results show that the system performance is promising.