Many people with paralysis can control a computer without a brain implant. Eye-gaze tracking, head tracking, voice recognition, and switches activated by a small reliable movement can provide ways to select, type, communicate, and navigate. The best fit depends on the person’s abilities, goals, comfort, and environment; an assistive-technology or augmentative and alternative communication (AAC) assessment can help identify suitable options.
Computer access does not require hand movement
People who cannot reliably use a conventional keyboard, touchscreen, or mouse may still be able to use a computer through another form of input. The ALS/MND Alliance describes alternatives for people who can no longer type, use a touchscreen, or give voice commands. These approaches use eye movement, head movement, speech, or a small repeatable muscle movement—not a brain implant.
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Depending on the software, alternative input can support cursor control, on-screen typing, and communication. With communication software, selected words or messages may be spoken aloud. The specific functions available depend on the system and how it is configured.
Ways to control a computer
Eye-gaze tracking
An eye-gaze system uses a camera to follow where the user looks. The user looks at letters, words, icons, or other screen targets to make selections. This can be useful when hand or arm movement is limited, provided the person can use their eyes reliably and the equipment can be positioned and set up for them.
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Switch access and scanning
A switch converts a repeatable movement into a computer input. Depending on the person, the switch may respond to an eyebrow raise, an eye blink, or a sip-and-puff action through a tube. With scanning software, choices are highlighted one at a time or in groups; the user activates the switch when the desired choice appears. Reliable movement, suitable switch placement, and compatible software all matter.
Head tracking
A head-tracking sensor follows head movement and uses it to move a cursor. It may offer direct cursor control for someone with a reliable range of head movement. Positioning, comfort, fatigue, and how the person will make selections need to be considered along with cursor movement.
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Voice recognition
Voice recognition can provide hands-free input for someone who can speak clearly and consistently enough for the software and setting. Speech can vary or become tiring, so voice control may work as a main input method for some people and as a supplement or backup for others. The available guidance identifies voice recognition as an access option but does not compare specific products or their current performance.
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Some access systems use skin sensors to detect electrical signals from small muscle movements, including movements in the face or hand. This may offer another route to input when conventional computer controls are difficult. The cited guidance does not provide comparative performance data or recommend particular products.
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Choosing an access method
There is no single method that works for everyone with paralysis. A useful assessment starts with the person’s reliable movements and considers what they need to do, how much effort they can comfortably sustain, and what works in their surroundings. The ALS Association recommends evaluation by a qualified speech-language pathologist when selecting AAC devices and access methods. The ALS/MND Alliance advises consulting relevant professionals and discussing equipment before purchase.
- Reliable movement: Which eye, head, voice, or muscle movements can the person repeat consistently?
- Visual and communication needs: Can they see and select screen targets comfortably, and do they need text, speech output, or other communication functions?
- Effort and fatigue: How tiring is the method during the tasks the person wants to do?
- Positioning and setup: Can the sensor or switch be placed appropriately, and does the system need calibration?
- Tasks and compatibility: Does the access method work with the computer, software, and communication tools the person intends to use?
- Support and access: Are local training, technical support, funding, or equipment loan programs available?
When possible, try equipment before buying it and ask about loan programs. Cost, availability, funding, and training time vary by region. Needs can also change, so a method that works now may need adjustment later; people may combine methods rather than rely on just one.
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What a small study found about eye control and switch scanning
A 2010 study by Chris Gibbons and Erin Beneteau compared eye control and single-switch scanning for on-screen keyboard use. It included five people with ALS and five adults without ALS. The authors reported that eye control had a speed advantage, while single-switch scanning had an accuracy advantage; both methods improved with practice. Participants with ALS were slower than the comparison group using both methods, and they preferred eye control overall.
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The study was small and focused on a specific task, so it does not establish a universal best method or describe current device performance. Its available abstract reports directional results but does not give numeric speed or accuracy rates.
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How these methods differ from a brain-computer interface
Eye gaze, switches, head tracking, and voice control rely on movement or speech. A brain-computer interface (BCI) is a different approach that reads brain activity. A National Institutes of Health report published July 14, 2026, described a clinical-trial participant using a BCI at home for communication and noted that cursor control could use brain activity or eye movements. That report does not make an implant necessary for ordinary computer access: established non-implant options include the methods described above.
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