Thomas Tajo. Photo of Thomas in color with a transparent blue layer over blind students he's teaching in India. with the Visioneers logo centered at the top.
Quote: 'When we all understand how the brain and our non-visual senses re-wire after sight-loss, we abolish the presumed incapacities society's blindness imposes.' Thomas Tajo.


Thomas Tajo’s journey from a developing country, through blindness from Optic Nerve Atrophy before he turned 10, (the same condition that took Brian Bushway’s sight), to obtaining a Master’s degree in Sociology, has been truly remarkable.

  But his greatest discovery came after graduation when he questioned, for the first time, the presumed incapacities society has always imposed on blind persons. 

Photo: Thomas Tajo sits on the grass next to a park table and plays guitar . His dog sits on the grass behind him.


Thomas Tajo serves as an Activational Workshop Visioneer in Europe, Asia and South America, leading activities that encourage everyone to live a more self-directed life full of possibilities related to their capabilities.

Thomas spreads Visioneers’ NO LIMITS! philosophy by helping to explain how the brain rewires, when activated by training activity after sight loss, by integrating the remaining senses.

And occasionally he demonstrates this as he did on Dutch TV on the program that’s roughly translated as “Betting That It’s Possible” in the video below.


M.A. Sociology – Delhi School of Economics @ University of Delhi | Bachelor of Social Sciences


Born in the foothills of the Himalayas to an aboriginal/tribal family in north-east India, Thomas Tajo became blind at the age of 8 or 9 due to Optic Nerve Atrophy.

He left home early at the age of 13 or 14 to go to a boarding school for the blind that was 500 miles away and since then he has lived on his own.

To complete his high school, Thomas moved to New Delhi. Living alone in a little rented room in Delhi, Thomas wrote songs and played music in bands while pursuing his high-school education and Bachelors degree through distance learning.

His song “The Wind! was part of the 2008 Delhi Underground Album “The Best of What’s Next.”

For a change, Thomas attended a regular course of study and achieved his Masters in Sociology from the Delhi School of Economics at the University of Delhi in 2012.

There he began to research and question everything, including his own blindness, and slowly realised that he had never questioned his own blindness and taken for granted that blindness means to be inherently incapable.

Since then Thomas has been researching  the history of the senses and presenting his findings to the scientific fora, such as how some senses have been culturally and scientifically ignored and devalued across time and culture, whereas other senses have been stimulated and educated to ably serve the purpose of enabling people to lead productive and fulfilling lives.

Thus, he came to the realization that his blindness and the inherent incapacity popularly associated with blindness is a lack of cultural and scientific awareness of the capacities of our non-visual senses.

Tapping into the popularly ignored capacities of his own senses, Thomas realised that he could train and educate his non-visual senses to allow him to effectively and efficiently perceive and interact with the world through those non-visual senses. This is where Thomas demonstrates his theory of a non-disabling philosophy of blindness through the practical living example of a life of blindness with capacity as a FlashSonar™ echolocation instructor and researcher on the senses.

Credentials. Photo: Thomas Tajo stands behind a seated , blindfolded woman holding a large plate to each side of her as part of a FlashSonar demonstration.

Knowing that if change has to come then it has to come from all directions, Thomas has chosen to engage with all fields of knowledge and all kinds of people and professions.

Video of Thomas teaching a 5-year old child in a park in Brussels, Belgium.

Most recently, Thomas conducted a FlashSonar echolocation workshop at the annual Contemporary Experimental Music Festival in Moscow, Russia.

Thomas has presented FlashSonar and Perceptual Navigation workshops and training to groups of blind people and sighted mobility instructors of the National Association of the Blind in Nicosia, Cyprus.

He has also participated in the echolocation research conducted at the Universities of Antwerpen and Leuven in Belgium, as well as the Universities of Eindhoven in the Netherlands, and Durham in England.

Thomas has presented papers in the University of Uppsala Disability Mundis workshop in Sweden in 2016, on the history of the emergence of sight as the dominant sense, and how the western visual cultural sensorium hindered the development of the non-visual sensorial capacities of blind people.

Thomas has also given talks to the National Laboratory of Acoustics at the University of Paris, France in 2015.

In 2017 as a Workshop Visioneer, Thomas has traveled to a number of countries around the world to provide Perceptual Navigation Instruction.

First stop was working with blind and sighted attendees at a Sound Festival in Moscow, Russia in the Spring.

Late summer took Thomas to Norway where he met up with Lead Visioneer Daniel Kish to provide Perceptual Navigation workshops over a long weekend.

Autumn found him traveling to Bangkok, Thailand to join Daniel and Senior Visioneer Brian Bushway for Phase Three of “Assignment Thailand” where blind Visioneer trainees received Instructor Certificates at varying ranks after their latest training.

Currently Thomas is living in Belgium and handling assignments for Visioneers from there.

Professional Bio. Photo: Thomas Tajo leads a group of blind students from an indoor festival setting to the outdoors for further training in Moscow.

In April, 2017,  Thomas Visioneered a workshop for a group of sighted university students in Ellwangen, Germany where he not only explained, theoretically, how FlashSonar echolocation works, but also blindfolded them and had them explore the busy city of Stuttgaard using FlashSonar.

Thomas has also given activational talks there on the changing definition of blindness which Visioneers is also is re-engineering through its philosophy and attitude of “No Limits Perceptual Freedom”.

In the media sector, Thomas appeared on ‘Wedden Dat Ik Het Kan’ (‘Bet I Can Do It’), a prime-time TV show in Netherlands, in 2016. He had to recognise five different objects within the time-limit of 5 minutes.

Thomas also participated as a performing artist in the 2016 Unnoticed Art Festival in the Netherlands.

There he played himself . . . in the role of a blind man, and explored a city where he had never been before, freely interacting with the people on the streets and in the cafes.

The aim was to get close to the people and see if they had ever closely interacted with a blind person before.

Through conversation, Thomas would gauge their views on blindness and give them the chance to reassess and change their views on blindness and blind people through a few minutes of deep and close personal interaction with someone who proclaims himself to be openly and comfortably blind.

Thomas has also presented activational talks to a club of creative people, ‘Imagination Club’ in Brussels, and has provided workshops to a group of contemporary dancers who were developing a ‘Dance in the Dark, in Lille, France in 2016, to become more aware of their bodies and senses.

Thomas has also helped out in the development of Blind Cinema, a contemporary artistic performance by Britt Hatzius, which is currently touring.

More recently, Thomas is helping a Brazilian architect research the accessibility, for blind people, of the Brussels Metros public transport system.



In Leuven, fifteen blind young people today learned how to perceive their surroundings by making sounds. They can see their environment through their ears. The technique is called Echolocation, already used by bats and dolphins. By making a clicking sound with the tongue, the blind know how far they are from an object and they can not run into it.

Via Echolocation, or FlashSonar, people with a visual impairment can form a mental picture of their environment. This can be done by making ‘clicking sounds’ with the tongue or with a small device. The reflected sound contains a lot of useful information about, for example, the size, height and distance of people and things.

“The potential is enormous,” says Thomas Tayo, blind FlashSonar and mobility instructor of ‘World Access to the Blind | Visioneers’. “I can now observe objects up to hundreds of meters away, which means that I now travel independently without the need for any assistance, and can move freely even in crowded places or at airports, and the blind and visually impaired pick up this skill quickly.”


In Leuven leren vandaag vijftien blinde jongeren hoe ze hun omgeving kunnen waarnemen door geluiden te maken. Ze kunnen hun omgeving als het ware zien door te horen. Echolocalisatie noemt die techniek, vleermuizen en dolfijnen gebruiken hem al. Door een klakkend geluid te maken met de tong, weten blinden hoe ver ze van een voorwerp zijn en kunnen ze er niet tegenaan lopen.

Via Echolocalisatie, of FlashSonar, kunnen mensen met een visuele beperking zich een mentaal beeld vormen van hun omgeving. Dit kan door met de tong of met een klein toestelletje ‘klikgeluiden’ te maken. Het teruggekaatste geluid bevat heel wat bruikbare informatie over bijvoorbeeld de grootte, hoogte en afstand van mensen en dingen.

“Het potentieel is enorm”, zegt Thomas Tayo, blinde echolocalisatie- en mobiliteitsinstructeur van ‘World Access to the Blind | Visioneers’. “Ik kan nu objecten tot op honderden meters afstand waarnemen. Dat maakt dat ik nu zelfstandig reis zonder nood aan enige assistentie, en me zelfs op drukke plaatsen of in luchthavens vrij kan bewegen. Blinden en slechtzienden pikken deze vaardigheid bovendien snel op.

Visioneer Thomas Tajo introduces FlashSonar to blind and sighted Moscovites. Photo shows Thomas leadingblind participants and blindfolded sighted participants outside a theater courtyard in Moscow.
Book Thomas Tajo for a Keynote Speech.
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One of the proudest legacies of the decades-long efforts by Daniel Kish to educate and liberate blind persons from the traditional cycles of marginalized dependency, has been the team of Perceptual Navigation Visioneers he’s assembled from his students who have grown up with FlashSonar™ Echolocation and its NO LIMITS philosophy.

Visioneers Media: FlashSonar Textbook. Preview and order the definitive textbook about learning to see with sound. Image: Cover of "Echolocation and FlashSonar" by Daniel Kish and Jo Hook, featuring a photo of Daniel Kish speaking at the Global Ted Conference is set against a photo of Chapter 1-What is Echolocation?


When it’s a beautiful day, our students see it in a new way.

Our scientifically-proven FlashSonar™ echolocation lights-up the brain’s Visual Cortex – the part normally used for vision – with audible spatial feedback, like flashes of light in the dark lighting-up the surrounding environment.

We operate entirely on donations.

Be the flash of opportunity by donating towards a FlashSonar™ Tuition Scholarship for a blind child, teen or adult, so we can teach them to




Our blind instructors with Masters Degrees provide services that are “ahead of the curve” from traditional blindness institutions, such as:


Did you know that 90% of a child’s brain is developed before the age of 5? Even some “developed” countries won’t teach blind children orientation, mobility and cane navigation until the age of 7. Do you realize how much precious time is lost? We teach sonic and tactile awareness as early as possible and even put a full-length Perception cane in their hand as early as a year old.


FlashSonar clicks+Audible Awareness+Perception Cane activates the Visual Cortex, training the brain to rewire to develop SonarVision.


We specialize in Special Education services and advocacy for families and Assessment Reports for School Districts, and much more.

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Photo: Daniel Kish moves a flatboard towards his face while making a shooshing sound onstage at TED2015 in Vancouver. Caption: Our vision is sound.
Our method is science. Photo: Juan Ruiz is fitted with sonic sensors during research at Durham University.
Photo: Brian Bushway stands with three students in Belize. Caption: Our Results Change Lives.


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