How badly do we love free WiFi? If you’ve ever spent a chunk of your time in a foreign land, desperately scouring cafes and airports for signs of that ubiquitous logo, then the answer is quite clear. Banking on this insatiable need for constant connectivity, Timothy Tsui co-founded FansWiFi, a service in Hong Kong that allows merchants to supercharge their free WiFi into a marketing tool, to attract and engage users.