While ZigBee hasn't become as ubiquitous in wireless as the likes of Bluetooth or WiFi, it has carved out niches in home automation and low-power gear. The format is about to expand its world a little further now that a more network-savvy spec, ZigBee IP, is officially available for everyone. The upgrade adds IPv6 and tougher security to the open mesh networking formula, letting it more easily join an internet of things where there's potentially billions of connected devices.