Jak Hutchcraft in Vice:
The term “super recognizer” first appeared in 2009 and describes people who can remember more than 80 percent of the faces of people they meet (the average is 20 percent). The neural-mechanism behind super recognition is still largely unknown, but the skill seems to be genetic and possessed by only about one percent of the population.
Today, police in many countries employ super recognizers (possibly including Hong Kong) but police in the United Kingdom have recruited more than most.
Kelly Hearsey is one such super recognizer. She works for Super Recognizers International Ltd, which is contracted by a range of police departments across the country. She took a test in 2018 and got the highest score they’d ever seen from over six million candidates. She’s since worked full-time as a super recognizer on everything from murder investigations to keeping notoriously disruptive fans out of sporting events.