The expansion of Wi-Fi into hundreds of millions of private homes and offices around the world, the deployment of more than 1m public Wi-Fi hot spots by the end of 2011 and the growth of a vast and mature ecosystem built of thousands of devices has established Wi-Fi as the most heavily used wireless technology in the world in terms of volume of data transmitted ... Wi-Fi is the primary form of connectivity for the overwhelming majority of users and it is apparent that Wi-Fi has become firmly entrenched in day-to-day usage.