BBC News - Philippa Roxby
As lockdowns ease, thermal imaging cameras are popping up in all sorts of public places to assess the state of people's health.
Using infrared technology, thermal cameras detect radiating heat from a body - usually from the forehead - and then estimate core body temperature.
"These devices, in general, are less accurate than medical device thermometers like those you stick in the ear," says Derek Hill, professor of medical imaging science from University College London...more
