Procedures and methods for synthesizing biodegradable polymer coated nanoceria result in stable nanoparticle preparations in aqueous systems and physiological relevant colloidal solutions, such as phosphate buffer saline. The method includes collecting data relating to operation of an element in the network, wherein the collected data comprises radio-frequency data relating to operation of the network. Image processing and voice processing, can also be implemented to assist customers with the purchase of non-scannable items.