How to Identify and Define a Super Recognizer?

Despera has always had an extraordinary ability to recognize and remember faces but she didn't know that she was a super recognizer until about four years ago. Today she works for a company called Super Recognizers International which trains and employs super recognizers to assist with everything from murder investigations to security at sporting events. How good does someone have to be at recognizing faces to qualify? On the whole we sort of set a rather arbitrary standard for super recognition that people should be able to be in the top 2% of the population achieving scoresShould I say on the fourth primary criteria, short term face memory,. long term face memory, simultaneous face matching.