Santander's Group City in Madrid is a big place; nine buildings sheltering 5,500 employees of one of the largest banks in the world. Guiding visitors around such a massive complex is a challenge, and what's the best way to solve any challenge? Robots, of course. Santander turned to YDreams, who we've seen before playing with augmented reality, but in this case produced something more tangible: a fleet of little red guys called "Interactive Guest Assistants" that use swarm interactions to guide fat cat bankers to
