This article applies to:
E-Prime Extensions for Tobii 2.0
A patch is available for licensed users of E-Prime Extensions for Tobii (EET) version 184.108.40.206 who are working with a Tobii X3-series eye tracker. This patch enables users to perform calibration of the X3 eye tracker from within their E-Prime experiment. Without the patch, calibration cannot be performed within the E-Prime experiment and instead must be done in Tobii Studio prior to the start of the experiment.
NOTE: E-Prime Extensions for Tobii 220.127.116.11 must be installed prior to installing the patch.
To access the Download, register on our Support site and log in. Then, you can navigate to the Downloads section and click on the "X3 Eyetracker Series Calibration Patch (version 18.104.22.168)" link to download the executable ZIP archive file named "EET 20250 X3-120 Patch.exe", which contains the patch installer. Running the patch installer results in the following changes to your EET system:
- The following files are installed to the ....Program Files (x86)/PST/E-Prime 2.0/Program folder:
- The Tobii PackageFile is updated to 22.214.171.124. To confirm the PackageFIle version, open up any TET sample experiment and navigate to the "Packages" tab on the Experiment Object and confirm the value in the Version column:
After applying the patch to your EET system, the following session-level independent variables will be logged in any EET-enabled experiment:
- TobiiConnectedModel: Logs the eye tracker model that was communicating with E-Prime during the experiment run.
- TobiiSdkMode: Logs the SDK version or versions that were utilized during the experiment run. When an X3 series eye tracker is used, TobiiSdkMode is set to SDK2AND3. For eye tracker models outside of the X3 series, TobiiSdkMode is set to SDK2ONLY.