This document describes a Dual Display Infotainment System (DDIS) installed at railway stations across India. The bottom 30% of the screens display real-time ticket information for passengers, while the top 70% displays advertisements. Over 1,000 screens have been installed so far in 7 states, reaching over 5.8 lakh people daily. Expanding to Mumbai would increase the reach substantially given its large commuter volume. Advertising on the 200 screens across 16 stations in Mumbai is estimated to reach 8 lakh people daily at a very low cost of 0.10 paisa per viewer.