Now there is a device for researchers and marketers to learn how you look at things. They want to know what catches your attention by looking and analyzing from the heat map generated by the data gathering from the glasses. It can be displayed on another viewing devices since the glasses is equipped with wireless capability. It has 4 cameras to catch the eye movement, and it has a visual field of 160 degrees horizontally. It also has a battery time of 120 minutes and weighted just 45 grams. The latest model is Tobii Glasses 2.
To learn more, you can visit: http://www.tobii.com/