“…Researchers evaluated HITs in the forms of developed computer website/application [ 33 , 34 , 38 , 40 ], simulated prototype [ 35 , 36 , 41 ], and screenshots [ 37 , 39 ]. Researchers used three different kinds of eye trackers to collect data: on-screen eye trackers (Tobii T60 and T120) [ 33 , 38 , 40 , 41 ], mobile eye trackers that are external to a personal computer (Sensomotoric Instruments [SMI] 500, Tobii X-60 and X120) [ 34 - 36 ], and head-mounted eye trackers [ 37 , 39 ]. Experiments were conducted either in a usability lab room or a meeting room.…”