Face-mask recognition has arrived—for better or worse New algorithms can police whether people are complying with public health guidance. The practice raises familiar questions about data privacy.

Face coverings are already proven to reduce the risk of spreading COVID-19 — now scientists say they have invented a mask that can detect respiratory viruses in the air.

Scientists have developed a face mask that can detect common respiratory viruses, such as influenza and COVID-19, in the air as droplets or aerosols within 10 minutes.