Table 2.
Specification of each eye-tracker as provided by the manufacturers
| SR Research EyeLink 1000Plus | The EyeTribe | SMI REDn | Tobii T60XL | Tobii Pro TX300 | |
|---|---|---|---|---|---|
| Sampling frequency (Hz) | 500 | 30 | 60 | 60 | 300 |
| Accuracy (°) | 0.5 | 0.5−1 | 0.4 | 0.5 | 0.4 |
| Precision (° RMS) | <0.05 | 0.1 | 0.05 | 0.35 | 0.15 |
| Headbox width × height (cm) | 40 × 40 (at 70 cm) | 40 × 30 (at 65 cm) | 50 × 30 (at 65 cm) | 44 × 22 (at 70 cm) | 37 × 17 (at 65 cm) |
| Headbox depth (cm) | 50−70 | 45−75 | 40−100 | 50−80 | 50−80 |
| Recommended tracking distance (cm) | 55−60 | Not specified | Not specified | 65 | 65 |
| Requirements for remote mode | Sticker on forehead | None | None | None | None |