Mobile hand-off and seamless log-in have been qualities where cellular networks significantly outperform WiFi, despite several efforts by WiFi organizations to develop similar functionality. The latest to make the attempt is CableLabs, the R&D arm of the US cable operators, which has developed a new way for smartphones to connect to the best WiFi connection automatically, called Mobile WiFi. The importance for cablecos is that this would make it easier for more mobile data to be transmitted over WiFi, reducing the fees they pay to support cellular connectivity via MVNO deals with large operators. Most large US cablecos now offer mobile services, but in a WiFi-first mode that defaults to the unlicensed technology where a decent signal is available. CableLabs…