https://www.theguardian.com/technology/2020/aug/21/face-masks-give-facial-recognition-software-identity-crisis

As tech firms scramble to keep up with reality of coronavirus, some experts say users must change

It is an increasingly common modern annoyance: arriving at the front of the queue to pay in a shop, pulling out a smartphone for a hygienic contact-free payment, and staring down at an error message because your phone fails to recognise your masked face.