The document proposes developing an "E-postcard" application that allows users to create and send digital postcards. Users would stand in front of a screen and their body movements would trigger patterns and designs on the background. Users could then add text messages, select icons and symbols, and capture the background as an e-postcard to email to friends. The goal is to modernize the concept of postcards while allowing messages to be conveyed through signs, symbols and body language instead of words.