From Big Data to big business! Nowadays, only 5% of the data generated in the cities is utilized for something it wasn’t created for. Using an underground trip card “only means” you are allowed to travel, we discard information that could let us optimize routes, lines, waiting times, etc. In 2025 billions of sensors will invade our cities trying to make our life easier, sensors in traffic lights, parks or streets. Can you imagine? At BBVA the future is now so we found an alternative approach to Big Data, based on people rather than sensors. This is the story of how we were able to transform a large number of financial transactions into actionable innovative services.