The penetration of smartphones and other mobile devices, such as tablets, into the affluent consumer market offers luxury brands ideal platforms to target, communicate and engage with customers and prospects. And with roughly 61 percent of the wealthiest Americans owning a smartphone (those making over $330,000 in annual household income), luxury brands who haven’t optimized their websites for mobile devices are sorely remiss. Mobile optimized websites should be the cost of entry for luxury brands, particularly retail brands. Amazingly, they are not, as Chanel, for example, is the only brand among Dior, Louis Vuitton, Hermes and Gucci to offer an optimized web presence as of early May).