Learn the basics of how to prepare Tobii Pro Glasses 2 for usage and how to use them in a study.
The Tobii Pro Glasses 2 eye tracking system is designed to be used for research purposes with adult participants and it includes the lightweight Tobii Glasses Head Unit, a wearable battery powered Recording Unit and Pro Glasses Controller running on a Window tablet or a Windows 7 computer. The Recording Unit is connected to the Head Unit via an HDMI cable. The Recording Unit holds the battery and stores all the recorded data collected on an SD memory card.
To record eye tracking data, the Glasses Head Unit must be fitted onto the test participant’s head (similar to a standard pair of glasses). It is a highly sophisticated measuring device and consists of several sensitive sensors, cameras and microphones and must be cared for as instructed for it to work properly. The system must also be calibrated separately for each participant. In the calibration process the test participant is asked to look at a Calibration Card held in-front of the participant for a few seconds. The researcher then starts the recording from Pro Glasses Controller running on a Windows tablet or computer.
After the session, the researcher stops the recording via the Pro Glasses Controller and removes the head unit from the test participant. All interactions with the eye tracker (adding participants to test, initiating calibration, starting/stopping recordings etc.) are done through Pro Glasses Controller software. The software also enables the researcher to view the eye tracking session both in realtime (streamed through a wireless or wired connection) and after the recording. When viewing a recording, the participant’s gaze point appears as a colored dot on the scene camera video from the HD camera integrated in the Tobii Glasses 2 Head Unit. For any eye tracking analysis beyond looking at the eye tracking replay (as described above), recorded data must be transferred to a computer running Tobii Pro Glasses Analyzer (by moving the SD memory card).
Charge all batteries and prepare all memory cards you intend to use. Insert an empty memory card and a fully charged battery in Recording Unit. Make sure you bring all necessary parts and components and make sure they are packaged and transported with care. We recommend making a test recording at the start of a new data collection day.