LONDON — Home automation devices employing the ZigBee open standard protocol were the market share leaders in 2012, with shipments of 4.5 million, narrowly beating out proprietary protocol offerings, ...

According to research firm In-Stat ("802.15.4 SoC & SiP Surge as ZigBee Faces Residential Competition" by Joyce Putscher, June 2005, # IN0501836MI), there are expected to be more than 150 million ...