Back to the Future: Why Physical Controls Are Making a Comeback
Update June, 2026:
Starting January 2026, car manufacturers will need to include physical buttons for important functions if they want to achieve a 5-star Euro NCAP safety rating. Euro NCAP is changing its rules to favor tactile controls over touchscreens, helping drivers keep their eyes on the road and ultimately making driving safer.
Have you ever found yourself fumbling through a touchscreen menu just to change the radio station or adjust the air conditioning while driving? You’re not alone. In recent years, both the appliance and automotive industries have been on a quest to replace traditional switches and rotary knobs with sleek touchscreens. While this might seem like progress, many users are less than thrilled with the change.
For years, product design seemed to move in one direction: fewer buttons, cleaner surfaces, larger displays, and more functions managed through touchscreens. From cars to appliances, from industrial panels to consumer electronics, the physical interface was often reduced or removed in the name of simplicity.
But users are pushing back.
The return of buttons, knobs, sliders, and rotary controls is not a rejection of digital technology. It is a reminder that the way people interact with machines is physical first. We do not only see an interface. We touch it, feel it, trust it, and sometimes operate it without looking at it.
That is where physical controls continue to offer something a flat screen cannot fully replace.
Piher Sensors & Controls puts it clearly: “Touchscreen-heavy interfaces can distract drivers when simple actions, such as changing the radio volume or adjusting cabin temperature, require navigating through several menus. A single wrong tap can create unnecessary confusion. There is also a reliability concern: if the central touchscreen fails, the driver may lose access to multiple essential vehicle functions at once.”
It’s not just individual frustrations catching attention. Safety organizations like the European New Car Assessment Program (NCAP) and Australia’s ANCAP are taking a stand. Starting January 2026, they are urging automakers to include physical controls if they want that coveted five-star safety rating.
When Touchscreens Make Sense
Touch interfaces have clear advantages. They are flexible, easy to update, and excellent for devices that need to handle many different functions. A single display can replace a large number of dedicated controls, reduce visual clutter, and make complex systems easier to configure.
This is why touchscreens became dominant in smartphones and increasingly common in vehicles, appliances, medical devices, and industrial equipment. For functions that are used occasionally, or for menus that need to change depending on the task, a screen can be the right solution.
In many products, however, not all controls should be treated in the same way.
Frequently used actions, safety-related functions, and controls that must be operated quickly often benefit from a dedicated physical interface. The difference becomes especially important when the user’s attention is divided, when gloves are used, when the environment is wet or dirty, or when feedback must be immediate.
Supporting this push back to basics, Sweden’s largest car magazine, Vi Bilägare, conducted research confirming what many of us feel: physical controls are not only safer but also faster to use.
So why the preference for rotary controls? It’s not just nostalgia at play here. It’s about safety and efficiency. Physical knobs and switches allow us to adjust settings quickly and intuitively. The tactile feedback—knowing you’ve turned the knob three clicks to the right—means you don’t need to take your eyes off the road. This “muscle memory” reduces errors and prevents unintended selections.
The same issues pop up in our kitchens. Ever tried using a touchscreen with wet or greasy hands? Or while wearing gloves? It’s frustrating, to say the least. Traditional knobs and switches don’t have this problem—they work reliably, no matter the conditions.
Appliance control switch potentiometer
| Car control potentiometer
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| Potentiometer with strong detents | Rotary selector potentiometer with strong detents |
The Problem With “Everything on a Screen”
A touchscreen asks the user to look, locate, select, and confirm. That sequence may be acceptable when setting up a device at rest. It becomes less ideal when the user is driving, cooking, operating machinery, or working in a demanding environment.
In a vehicle, for example, adjusting a temperature setting or changing audio volume should not require the driver to navigate through a menu. A rotary knob, switch, or push button can often be found by touch and operated with minimal visual distraction.
This is one reason why the automotive industry is reconsidering the balance between digital displays and physical controls. Safety organizations and manufacturers are recognizing that some commands should remain directly accessible. Primary driving functions such as indicators, hazard lights, wipers, headlights, and horn are not simply interface options. They are essential controls.
At 100 km/h, a vehicle travels nearly 56 meters in two seconds. Any interface that unnecessarily increases eyes-off-road time deserves careful review.
Tactile Feedback Builds Confidence
Physical controls also create a stronger sense of confirmation.
A button click, a detent in a rotary selector, or the resistance of a quality knob tells the user that an action has been made. This feedback reduces uncertainty. It helps prevent accidental inputs. It also makes the product feel more precise and reliable.
That is why many users still prefer mechanical keyboards, rotary volume controls, appliance knobs, and physical selectors, even when a touch alternative is available. The preference is not only nostalgic. It is practical, sensory, and emotional.
A well-designed physical control can communicate quality before the product is even switched on.
Reduced Chip Dependence
There’s also a practical side to sticking with physical controls: reduced dependence on chips. Potentiometers and analog designs are easier on processors, requiring less power and sometimes no extra hardware at all. This means they’re less likely to be affected by the cyclical semiconductor shortages we’ve seen in recent years. Remember the chip shortage after the COVID-19 lockdowns in 2021? Some leading car manufacturers had to revert to older designs just to keep production lines moving.
The Value of a Hybrid HMI
The future of human-machine interfaces is not a choice between screens and buttons. The strongest designs combine both.
Touchscreens are excellent for information-rich content, diagnostics, configuration, and functions that change depending on the operating mode. Physical controls are better suited for frequent commands, critical actions, and environments where the user needs speed, precision, or operation by touch.
This hybrid approach gives designers more freedom. A display can provide flexibility, while a knob, button, or sensor-based control provides confidence and immediacy.
The result is an interface that feels modern without sacrificing usability.
Where Piher Fits In
Behind every effective physical control is a reliable solution.
Rotary potentiometers, non-contact Hall-effect rotary controls, and customized control solutions allow movement to be translated into accurate electrical signals. These technologies make it possible to design controls that feel intuitive while meeting demanding requirements for durability, sealing, electrical performance, and long service life.
This is especially relevant in automotive, off-highway, industrial, appliance, marine, and professional equipment applications, where the interface must often work in harsh conditions and still feel natural to the user.
Piher’s experience in variable resistors and custom HMI components supports this renewed interest in physical interaction. Whether the application requires a simple rotary adjustment, a robust detented selector, a sealed control, or a contactless angular sensing solution, the objective remains the same: make the interaction clear, reliable, and easy to trust.
Back to the Future
The return of physical controls is not about going backwards. It is about applying the right technology to the right function.
For some tasks, a touchscreen is the best interface. For others, a physical button, knob, or rotary sensor provides a better user experience and a safer, more reliable interaction.
Good HMI design does not follow fashion blindly. It considers the user, the environment, the frequency of use, and the importance of the action.
After years of removing buttons, many industries are rediscovering their value. The future will not be all glass, and it will not be all mechanical. It will be a balanced combination of digital flexibility and tactile confidence.
Sometimes the most advanced interface is the one the user can find, feel, and operate without thinking.
At the end of the day, as much as we love new technology, there’s something to be said for the simplicity and reliability of physical controls. They offer a user experience that touchscreens just can’t match.
So, are we ready to embrace a bit of the past to improve our future? It might just be time to go back to the future.
