 Using a prototype domestic television equipped with the Prestel chip set, Michael Aldrich of Redifon Computers Ltd demonstrated a real-time transaction processing in 1979 or online shopping as it is now called.From 1980 onwards he designed, sold and installed systems with major UK companies including the world's first travel industry system, the world's first vehicle locator system for one of the world's largest auto manufacturers and the world's first supermarket system.He wrote a book about his ideas and systems which among other topics explored a future of teleshopping and teleworking that has proven to be prophetic.