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Grant [Tobii]

Hi @jrgordon, and thanks for your query. I am afraid that the Tobii XR SDK does not expose pupil diameter with this API.

To accomplish this, you would need to use the Tobii Pro SDK which you can download @ https://www.tobiipro.com/product-listing/tobii-pro-sdk/

Whilst pupil size is exposed in the .NET, Python Bindings, it may not be available in the Unity API, please check with Tobii Pro Support about this @ https://www.tobiipro.com/contact/support/

Please do let us know if we can provide any further information. Best Wishes.