An excerpt from the patent specification.
Search results can also be obtained using nontraditional means of submitting search queries. FIG. 59A depicts the process through which automatic data capture hardware, such as a bar-code scanner or RFID reader, can be used to perform a search of UAML enabled listings throughout the entire World Wide Web. First, the automatic data capture mechanism, coupled to a computer including a computer monitor, is used to scan a product for its RFID tag or bar-code number, a UPC or EPC number 5901. This information is submitted to the UET Company, and a search is then performed in the appropriate field of the appropriate database 5902 on the given identification number. These results are then returned to the user 5904 in the form of a hypertext document that includes links to listings for the given identified product.