Vietnam’s Coronavirus Death Toll Is Zero. The Cost? Total Surveillance.

The nation’s response to the pandemic reveals a resourceful — and often troubling — use of technology

Motorbike riders with face masks are stuck in traffic during the morning peak hour on May 19, 2020, in Hanoi, Vietnam. Photo: Linh Pham/Getty Images

The rooftop of an apartment block in central Hanoi seems like an odd space to host a marathon. But when Vietnam imposed aggressive restrictions on outdoor movement in response…