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The Impossible Run was made to prove the absolute accuracy of hyper directional sound technology. Through a laser sharp sound tunnel, we enabled visually impaired Oscar to run unassisted for the very first time, guided only by sound.

This is Oscar

18 years old from Stockholm. Judo master, rock band drummer, physics student and fully visually impaired since he was 5. Sound is his most important sense when it comes to understanding and experiencing the world around him. And with the hearing expertise that he’s developed over the years, we were able to fully explore the potential of hyper directional sound technology.

Portrait of Oscar.
Close-up of Oscar's eyes

0,5 %

Oscar’s combined sight including both eyes.


Oscar’s disability sport classification - for people who are considered blind.


Resulting in damage to the optic nerve and vision loss.


The clouding of the lens in the eye leading to a decrease in vision.

Cloudy cornea

Leading to blurry vision affecting both eyes.


Genetic disease meaning the absence of the iris, often leading to the most difficult forms of blindness.

"Disability is not the disabled people – it’s us, who put limits on Oscar that don’t really exist."

- Lena Widegren, Oscar’s mom

"Oscar is truly an inspirational athlete. Determined, goal oriented and always with a smile on his face."

- Running coaches Anders Szalkai & Åsa Lundin
Illustration of how direct soundwaves moves in a striaght line

Hyper directional sound

With a set of hyper directional speakers we created two parallel ultra sharp sound beams – one to the right and one to the left. These right and left sounds created a laser sharp sound tunnel in which Oscar could navigate and run straight forward only by listening.

Photo of Lexter staff working

We are going to continue to challenge and support the market in exploring how sound can improve the conditions for e.g. visually impaired athletes in sports. Making this impossible run possible for the first time, is just the start. We are now working on finding ways to make this technology available for more people.

- Margareta Andersson, Founder of Lexter