They (O.R. Tambo) have been using the thermal imaging scanner when you clean RSA Immigration/Passport control at least since our first trip then in 2008. The previous purpose was to scan for Yellow Fever. It has been located at the head of the pass port line where you are "fanned out" to have your passport stamped with the visa.
They were using the scanners when we went in May 2010. Supposedly that was because of the World Cup. They weren't using them when we went in May 2014.
