The idea for a smart sensor that can automatically detect whether a face mask is properly fitted around the wearer's mouth occurred to Josiah Hester after speaking with Chicago clinicians dealing ...

Face masks are proven tools for limiting the novel coronavirus' spread, and governments around the world have mandated people wear coverings to reduce the outbreak's impact.

Researchers developed a prototype Covid-19 testing face mask with a patch of sensors attached to a pad that collects the user's breath particles.