Integration of cellular and WiFi networks lies at the heart of many important business models, including the mobile operators’ HetNets and the cablecos’ WiFi-first services. However, these rely on completely seamless authentication and hand-off as users move between the different connections. This is currently mainly supported by third party software, but the base-level functionality is standardized in a series of specifications – the WiFi Alliance’s Passpoint, the Wireless Broadband Alliance’s Next Generation Hotspot, and the 3GPP’s ANDSF. However, these have been slow to see large-scale adoption, something which will only change if they are supported in the most popular mobile devices. WiFi hotspot aggregator Boingo, and early deployer of Passpoint and NGH in its networks, says it is making progress…