The recently deployed WiFi 6 network at São Paulo/Guarulhos International Airport in Brazil has been touted as the first airport-wide installation of this sixth generation of the technology. Airports generally have been a proving ground for WiFi 6 in public arenas, and an environment in which WiFi and 5G will be duking it out to support private networks of huge complexity. For WiFi 6, deployments such as São Paulo can help to establish whether the added benefits really do wow passengers and overcome limitations of networks based on earlier versions, such as contention delay for access, often stuttering performance and concerns over security. But the value of airports as testbeds has been compromised during the Covid-19 pandemic by a dramatic…