The document discusses various uses of QR codes including for lead generation, customer retention, and business productivity. It provides examples of how Lionsgate used a QR code poster to promote the movie "For Colored Girls" and links to a trailer and information. It also lists different types of QR code generators and recommends some for specific uses like location tracking or custom colors. Finally, it provides references for learning more about the history and technical specifications of QR codes as well as a book and video about using them in enterprises.