System Sensor EyeControl uses

2. Enlarge the system interface (scaling and text)

Large buttons and text provide bigger "targets" for the dwell click - fewer mistakes when clicking with your eyes.

• Settings → System → Display → Scale - set 125% or 150% (on 24" and larger monitors sometimes 175%). Windows will recommend restarting applications.
• Settings → Accessibility → Text size - the Text size slider, confirm with the Apply button. It also works in Office apps, Edge and email.
• Taskbar: right-click the taskbar → Taskbar settings → Taskbar behaviors → Taskbar alignment: Left and clear Automatically hide the taskbar. In Windows 11 Pro you can also enlarge the taskbar icons by editing the registry (the TaskbarSi key).
• Desktop: right-click the desktop → View → Large icons.

3. Turn off animations and transparency effects

Window animations, transparency and motion effects make elements "escape" from under your gaze and the dwell click becomes less precise.

• Settings → Accessibility → Visual effects - turn off Transparency effects and Animation effects.
• Shorten how long notifications stay on screen: Settings → Accessibility → Visual effects → Dismiss notifications after - set e.g. 30 s or 1 min so toasts disappear on their own.

4. Turn on Snap Assist - automatic window arrangement

Without a hand-held mouse it is hard to drag windows into corners. Snap Assist does it with a single click.

• Settings → System → Multitasking → Snap windows - leave all options enabled (Show snap layouts when I hover over the maximize button - this is the most important one for eye control).
• The result: hover your gaze over the window's maximize button (the little square next to the X), wait 2-3 s - Windows will show layout templates, and you pick a zone with a dwell click.

5. On-screen keyboard - important when you have no helper at hand

Windows has two on-screen keyboards - choose the Touch keyboard, because it has larger keys and better dwell clicks.

• Settings → Personalization → Taskbar → Taskbar corner icons → Touch keyboard: On. The keyboard appears on a small icon next to the clock - a single dwell opens it.
• In the touch keyboard: the gear icon → Keyboard size (set 100-120%) and Theme (light or dark).
• Alternatively: System Sensor PIC (desktop) or System Sensor Mouse + Keyboard have their own on-screen keyboards designed for dwell click.

6. Voice dictation - wherever possible

When the patient can still speak, dictation is many times faster than typing on an on-screen keyboard.

• Turn on: Win+H in any text field (Windows 11) - the dictation window will open.
• Check: Settings → Time & language → Speech - select Polish (Poland) as the speech language.
• Turn on Automatic punctuation (in the dictation window, the gear icon).

7. Launching applications - large desktop shortcuts

Turn your most-used applications into large, colorful desktop shortcuts - it is easier to hit them with your eyes than an icon in the Start menu.

• Right-click the desktop → New → Shortcut, and then: right-click the shortcut → Properties → Change Icon - choose a bold icon.
• Pin your most frequent applications to the taskbar (Edge, Office, PIC, EyeControl, email).
• Set EyeControl to launch automatically: EyeControl settings → Start tab → Autostart when Windows starts.

8. Keyboard accessibility (Sticky Keys, Filter Keys)

If the patient also clicks with an RS232 sensor or a single button, turn on Sticky Keys:

• Settings → Accessibility → Keyboard → Sticky Keys: On - shortcuts such as Ctrl+C or Alt+F4 can then be entered one key at a time, without holding.
• Filter Keys (in the same place) - ignores brief, accidental key presses (important when the hands tremble).

9. Dark mode and night light

A dark theme tires the eyes less, and "Night Light" reduces blue light in the evening - important, because eye control sessions often last for hours.

• Settings → Personalization → Colors → Mode: Dark.
• Settings → System → Display → Night light: On, and in Night light settings set a schedule from dusk to dawn.

10. Sensor position and surroundings

The best Windows setup will not help if the sensor is mounted poorly. Two rules key to Tobii and webcams:

• Sensor below the screen, centered, 50-80 cm from the user's eyes (with the Tobii 5L: up to 95 cm). In Tobii Experience you will see a preview of "both eyes as bright dots in a rectangle" - they should be in the center.
• Avoid direct light on the face (sun through a window, a strong lamp) - it causes reflections in glasses / lenses and faulty tracking. Ideal is soft, even lighting from the side.
• People who wear glasses: in Tobii Experience create two calibration profiles - one with glasses, one without. Choose the profile before a session.

11. Windows' built-in "Eye Control" - when it's worth turning on

Windows 10/11 has its own built-in Windows Eye Control feature (Microsoft Eye Control). It is a complement, not a replacement for EyeControl - it provides, for example, a launchpad with ready-made actions (scrolling, right-click, on-screen keyboard, text-to-speech).

• Turn on: Settings → Accessibility → Eye control: On.
• Note: the built-in Windows Eye Control is designed mainly for the Tobii 4C, and its keyboard supports only the EN-US layout. For typing in Polish it is better to use the Windows touch keyboard or the keyboard in PIC.
• In the launchpad it is worth turning on the Gaze cursor (a red dot shows where the system "sees" your gaze) - good for learning and diagnostics.

12. Magnifier - emergency zoom

When you happen to land on a page with a tiny "Close" button or a checkbox, a quick zoom solves the problem.

• Turn on: Win++, turn off: Win+Esc.
• Modes: Full screen (all of Windows magnified) or Docked (a magnification bar at the top).

Sources and further reading: Microsoft - Making your mouse and keyboard easier to use, Microsoft - Eye Control basics, Microsoft - Troubleshooting Eye Control, Tobii Help - Get started with Windows Eye Control.