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Grant [Tobii]

Hi @optimud, the working distance of the EyeX is 45-80 cm (18-32 in)
At 70 cm (28 in) distance, the head movement “plane” is 48×39 cm (19×15 in)

The numbers are specified parallel/orthogonal to screen surface, assuming eye tracker is at 20 degree angle to screen.

Hope this answers your question!