Wireless location beacons are now the size of stickers

When a company called Estimote released its first product last year, it was about the size of of a kiwi fruit that had been cut in half. Its diminutive wireless Bluetooth beacons were (and still are) designed to replace things like signs and information placards by sending that to the screen of your smartphone. At the same time, the beacons would help retail shops, museums, and restaurants keep track of where visitors were going. But there were a few things holding the initial version back. There's an accelerometer to track motion, but people would just stick the beacons on walls or pillars where they remained stationary. And while aesthetically pleasing with bright colors and a polygonal form, they were still big enough that some places affixed them out of sight.