HK's thinking of it ..
.. while S'pore has already done it ..The department is working with the universities, and hopes to introduce an infrared scanner. As a person walks through a passageway, his face would appear on a monitor in a colour that would indicate whether his temperature was normal or high. If infrared results show a high temperature, they would use an ear thermometer to check it.
.. the thermal scanner, originally meant for military use has been adapted locally by ST Electronics and the Defence Science and Technology Agency