The founder of Signal, reputed cryptographer Moxie Marlinspike, said in a blog post that given the number of protests and marches taking place at the moment, "One immediate thing seems clear: 2020 is a pretty good year to cover your face."
He said the latest version of Signal for both Android and iOS had a new blur feature in the image editor which would help protect the privacy of people in photos that were shared.
All the blurring would take place on a person's own device to maintain privacy.
"These system libraries are not perfect. They don’t detect every face 100% of the time, and these flaws and potential biases meant that it was important to extend their default functionality so that you can always draw with the blur brush to manually obscure additional faces or areas in a photo."
He said that the Signal project was looking to distribute free face coverings to people.
"We’ve been working to find a manufacturer capable of producing high volumes of face coverings in the current global circumstances," Marlinspike added.
"We’re finalising a few remaining details and will provide more information soon."