Hi @anna-mei and thanks for your query. The Tobii X3-120 is part of the Tobii Pro business department.
This forum is intended for support with the Tobii Tech Consumer level eye trackers (4C, Eyex, etc) and their associated SDK’s.
Please get in touch with Tobii Pro Support team directly @ http://www.tobiipro.com/contact/contact-support/ for an
answer to your query.
Apologies for the inconvenience and thanks for your understanding.