A simple, seemingly trivial question – with a sobering answer: It cannot.
A touchscreen cannot be used directly by a blind person.
What sighted users take for granted – tapping, swiping, selecting, confirming – is simply not possible without visual perception. All information displayed on the screen remains invisible. There is no visual orientation, no recognisable position of buttons, no indication of where you are within a menu or how to confirm an action.
Imagine needing to complete an important task – paying, buying a ticket, retrieving information – while standing in front of a smooth glass surface that provides no tactile feedback whatsoever. Every attempt to interact with the screen becomes guesswork. For blind people, this is not an exception – it is everyday reality.
So what can be done?
The solution is not to make touchscreens “simpler”.
The solution is to create alternative technical channels for conveying information. Modern devices are perfectly capable of addressing multiple senses. When one sense – in this case vision – is not available, other sensory channels can be deliberately used to compensate for this limitation. This is where assistive technologies come into play.
What are assistive technologies?
Assistive technologies are technical tools and functions that enable or significantly facilitate the use of devices, software or services by people with disabilities. They form the bridge between human and machine – especially when conventional human-machine interfaces fail.
In the context of touchscreens for blind users, this means in practical terms:
Audio output via headphones
When headphones are plugged in, the device automatically switches to an audio mode. Every menu item, selection and piece of information is spoken aloud. The screen becomes audible.
Tactile cursor control
Instead of navigating a smooth glass surface, interaction is carried out via tactile controls such as arrow keys, rotary controls or sliders. Navigation becomes spatially perceptible.
Acoustic feedback and voice confirmation
Every action is confirmed audibly: “Selection confirmed”, “Next”, “Cancel”. This provides confidence, orientation and control.
Accessibility is technically demanding
For all of this to work reliably, it is not enough to simply “add speech output”.
Accessibility requires well-designed system architecture:
- Spoken descriptions must be provided for every single menu element.
- Processes and menu hierarchies must be structured in a logical, linear and comprehensible way.
- Hardware interfaces such as headphone jacks, tactile controls or alternative input devices must be considered and integrated from the outset.
- Software, hardware and interaction design must work together seamlessly.
In this context, accessibility does not mean less technology – it means more technology, intelligently combined and consistently designed around the user.
A necessary change of perspective
For sighted users, a touchscreen is fast, modern and efficient.
For blind users, without assistive technologies, it is an insurmountable barrier.
Anyone who wants to understand why accessibility is not a “nice to have”, but a necessity, must allow for this change of perspective:
How independently can you manage your life if even everyday actions are impossible without assistance?
Conclusion
Accessibility does not emerge when people are forced to adapt to technology.
Accessibility emerges when technology adapts to people.
Assistive technologies are not a special solution for a few. They are an expression of respect, technological maturity and social responsibility – and a key building block for an inclusive digital future.