Imagine that you have to conduct a quantitative (N=80) eye-tracking experiment containing 20 stimuli with additional questionnaires presented after the test. There are two ways to achieve it: The offline way You’re probably familiar with a Tobii, GP3, or any other hardware eye-tracker, so you know what to do: go to your laboratory (assuming there’s no lockdown at the moment), set up the study, and invite the participants. Here’s the tricky part: before getting to the actual data, you have to…