The Hot New Covid Tech Is Wearable and Constantly Tracks You

The powerful new surveillance systems, wearable devices that continuously monitor users, are the latest high-tech gadgets to emerge in the battle to hinder the coronavirus. Some sports leagues, factories and nursing homes have already deployed them. Resorts are rushing to adopt them. A few schools are preparing to try them. And the conference industry is eyeing them as a potential tool to help reopen convention centers.