If you've ever spent what felt like hours searching for your car in a parking garage, or gotten lost in a hospital, you already understand the case for indoor GPS.
The traditional GPS that we're accustomed to using outdoors answers two questions that have bedeviled human beings since the dawn of time: Where exactly am I right now? and How do I get to where I want to be? Indoor navigation services bring the answers to those questions in from the rain, using sensor-equipped Internet of Things (IoT) devices to establish position in any environment, and to plot the best course through it.
So far, retail has been the obvious use case for this technology: Indoor wayfinding is already directing shoppers to the products they're looking for. But indoor GPS has other applications as well. What follow are some of the more intriguing of them.