Some NYC subway stations are about to receive a functional boost in the form of interactive subway maps designed by Antenna Design, the firm also responsible for the ubiquitous MetroCard vending machines. The tall (6 foot, 4 inch) screens will also serve up advertising administered by CBS Outdoor and Control Group, providing an opportunity for savvy advertisers to serve interactive ad experiences to a captive audience during the (hopefully) short wait on the platform. The primary purpose of the screens is to provide information to travelers, so ads may be suspended with a simple tap. The program is expected to remain in beta through 2015 at 16 of the busiest stations in MTA’s system.