Retailers have been the predominant targets of a recent wave of demand letters claiming that their websites and mobile applications unlawfully discriminate against disabled customers. These demands come on the heels of the Department of Justice’s (DOJ) confirmation that, in 2018, it will propose accessibility standards for private businesses, based on the accessibility standards it has already proposed for public entities. Even with two months left in the year, 2016 has already seen more single-plaintiff and class action lawsuits actually filed against retailers on this issue than ever before. In the face of an increasingly active plaintiffs’ bar, any retailer with a commercial website or mobile application—especially those operating in California, New York, or Pennsylvania, where the majority of these suits have been filed—should take notice and prepare accordingly.