SURF CODES

Providing databases in the field of product identification numbers and global computer network addresses; providing search engines for obtaining data on a global computer network; providing on-line advertisers with demographic and other information concerning end users; allowing end users to access computers on a global computer network using data contained in machine-readable indicia that are applied to products and advertisements; and preparing and producing printed matter and other substrates containing thereon machine-readable indicia used to access computers on a global computer network