GPS is really good at finding where people are, typically with a margin of error of just a few meters. That's fine if you're using GPS for driving directions, but if you're, say, a drone operator, you might want to navigate the sky more precisely, as a few feet can mean the difference between flying between buildings and crashing into them. Created by Swift Navigation, the Piksi (pronounced "pixie") GPS receiver could give unmanned aerial vehicles a GPS signal accurate to an inch. The project has already received nearly six times its initial funding goal on Kickstarter.