What Are Those Funny Little Square Things I now See Everywhere?

EVERYWHERE YOU GO YOU CAN HARDLY PICK UP AN ADVERTISEMENT PRODUCT BROCHURE LOOK AT A BILLBOARD SURF THE INTERNET OR JUST WALK DOWN THE AVENUE WITHOUT SEEING MANY OF THESE LITTLE SQUARE THINGS IN MORE AND MORE PLACES EACH AND EVERY DAY. . WHAT ARE THEY? ACTUALLY THESE MYSTERIOUS SQUARES ARE CALLED TWO DIMENSIONAL BAR CODES. THIS BOOK WILL PROVIDE THE READER WITH SOME INTERESTING AND ENTERTAINING BACKROUND ON HIGH TECHNOLOGY AND ITS HISTORY WHILE EXPANDING YOUR KNOWLEDGE OF THE MANY DIFFERENT AUTO IDENTIFICATION APPLICATIONS AND SHOW YOU HOW TO BEGIN DEVELOPING A BETTER UNDERSTANDING OF THEIR INHERENT CAPABILITIES FOR OWN PERSONAL USE. . SOON YOU WILL BE ABLE TO ACTUALLY UNDERSTAND AND BENEFIT FROM THEM ENHANCE YOUR BUSINESS WITH THEM PROMOTE AND COMMUNICATE MORE EFFERCTIVELY WITH THEM AND EVEN BROADEN YOUR OWN PERSONAL SOCIAL MEDIA EXPERIENCES WITH THEM ETC. ETC. . START CREATING YOUR OWN CODES AND APPLICATIONS.SO ENTER THIS WORLD OF TERRIFIC CAPABILITIES AND DO IT FOR VITUALLY FREE BECAUSE THIS BOOK IS YOUR GATEWAY THERE.......