We use BambooHR to store the "truth" about everyone in the company (around 360 people in 3 countries now), and during our most recent hackathon, a few creative

We use BambooHR to store the "truth" about everyone in the company (around 360 people in 3 countries now), and during our most recent hackathon, a few creative folks made a phone app that did face recognition and when you pointed the camera at anyone, their name would appear on-screen and you can click it for more information including which office they're in and a floor plan showing how to find them :)