This document discusses mobile marketing and QR codes. It defines QR codes as two-dimensional barcodes that can link to various types of online content like URLs, contact info, and more. The document provides examples of how businesses can use QR codes on things like marketing collateral, signs, business cards and more to drive customers to mobile-optimized websites with information, menus, contact details and other content. It also discusses tools for creating QR codes, best practices for implementation, and analytics for tracking customer engagement through QR code scanning.