One UK provider, Facewatch, says it has now updated its CCTV systems to be able to recognise someone even if they are wearing a mask.
"It focuses on the periocular area - the area around your eyes," says spokesman Stuart Greenfield. "We are very excited, it is a big development not just in facial recognition, but in crime prevention.
ICYMI
While Facewatch says it "fully complies" with the GDPR and meets its critical "Substantial Public Interest" standard, we find some issues with this, chiefly: