The document discusses a 2014 Google study on multiscreen usage among smartphone, TV, laptop and PC owners aged 16-55 in certain socioeconomic groups in Peru. It shows that consumers now use multiple devices at different stages of the purchasing process, from initial research to finalizing purchases. Marketers need to use a variety of digital marketing channels, including search, display, video, email, social media and ads to reach consumers across different screens. The study also introduces three consumer archetypes - introducers, influencers and closers - that marketers can target along the path to purchase.