Connect is an interactive TV system developed by RTL Belgium that allows viewers to engage with content and ads on a second screen like a smartphone or tablet. It uses watermarking and time-syncing to link the TV programming and second screens. This increases viewer engagement, especially for ads. Over 1 million RTL apps have been downloaded, with 41% of downloads for the TV channel apps that have Connect features. Connect ads have seen a 19% increase in unaided recall, 58% higher ad relevance, and 83% higher persuasion value. RTL aims to continue expanding Connect to more channels and features like coupons, e-commerce, and collecting customer data.