1. System for tracking and decoding barcode using portable devices equipped with digital cameras characterized in that it comprises: At least a central processing unit ( 310 ) which is responsible for performing the necessary instructions for managing the camera, and make the computations for processing the image with the barcode; A camera ( 311 ) capturing images and having a sufficient focus for the captured image to be maintained clear; Storage medium ( 312 ) for storing information and data, including codes decoded; Information input devices ( 313 ); Audio Components ( 314 ); Connectivity component ( 315 ) for communication between the application and a remote database that has information about the products; display means ( 316 ) to view the pictures captured by the camera device, and when the barcode ( 110 ) is framed by the camera device, the system starts the location and decoding operations that will process the pictures obtained by the camera under execution, and then run the necessary procedures to determine the orientation and the boundaries of the barcode, and also made corrections related to lighting, signal/noise ratio, and thus the barcode is decoded.