The present invention relates to a method of discounting a multi-media content item, which is to be sold at a purchase request through a communication network, such as the Internet. Photometric andor morphometric image features identifiable in the images are used to identify differences between first and second populations of cells. A product identifier extracted from the optical code is used to request product information from a global server system with respect to the product or to take an action with respect to the product, such as adding the product to an electronic shopping cart. The controller provides additional power to the wireless transceiver responsive to determining the frame is a predefined wakeup frame.