Hi @dom202, as you can see in the sample code, the fixation information such as begin, end and duration is already included in the output text. Naturally, you can comment out the readkey function as use a different means to break. Perhaps the documentation describing the use of Activatable interactor @ https://tobii.github.io/CoreSDK/articles/interactors.html whereby a function is called when the user gazes at the area associated with the interactor and simultaneously presses a key on the keyboard would be useful for your needs?
If you could kindly be more specific in your needs regarding the ‘certain condition’, we will try to find you the appropriate solution.