downloadable software applications for use with mobile devices for authenticating user information and identification, passwords and pin numbers, creating and scanning digital two-dimensional bar codes, scanning three-dimensional objects, and tracking and aggregating user purchase history; downloadable payment software for processing electronic payments and transferring funds to and from others and for linking e-commerce websites to credit card processing networks; downloadable e-commerce software to allow users to perform electronic business transactions via a global computer network; downloadable software for scanning images in order to enable the purchase of the depicted goods; data codes, namely, two dimensional code labels, encoded bar code labels, encoded optical code labels, downloadable electronic data files featuring two dimensional codes; data code readers, namely, bar code readers, electronic readers for two dimensional codes contained in electronic data files, optical code readers; data code scanners, namely, bar code scanners, magnetic coded payment card scanners, electronic scanners for two dimensional codes contained in electronic data files, optical code scanners