track and trace

Geofencing is a virtual fence in the real world. When combined with our homing beacon -- the smartphone that identifies us everywhere we go -- it becomes a tool with extraordinary powers, for good and evil. Several recent court cases, which likely have escaped your attention, may give you more than a moment's pause in this era of the coronavirus. 
"Track and Trace" is the latest COVID-19 catchphrase. It describes the process of identifying the ill and exposed, which then can make it safer for us to mingle socially once again. As a program gets underway in the U.S., what lessons can we learn from Asia?