How braille, screen readers and other technology changed the world for blind readers

Thick fingers of smoke from the burning Imo beckoned to those who had heard the ship crash into theMont-BlancinHalifax harbour.

Many on shore pressed their facesto their windows, momentsbefore an explosion sent glass and debris flying for more than two kilometres blinding at least 37 people and partially blinding at least 217 others, according to archival records.

The devastation 100 years ago, which also killed 2,000 people, prompted an outpouring of funding from across North America to help teach those who had been blinded suddenly to learn to function without sight.

And the Halifax School for the Blind, which had previously only taught children, opened its doors to the victims of both the explosion and the veterans returning without sight after the First World War.

As part of the Halifax Explosioncentennial, the Canadian National Institute for the Blind has released an exhibitchronicling the inventions that changed blind literacy.

It begins with the man who inventedbraille.

Braille vs. Moon type

Louis Braille lost his sight as a toddler followingan accident in his father's workshop. He's been described as having a fierce determination to learn to read; when Braille learned of the code thatFrench soldiers were using in the Napoleonic war, he adapted it for himself.

Amore sophisticated version of the original code, braille is made up of six dots that are raised or absent to indicate which letter of the Roman alphabet they represent. Braille first publishedthe system in 1829.

"It eventually became the international standard and is used widely, even today," says Jane Beaumont, the volunteer archivist atCNIB. "But before braille became the standard there was quite a fight we call it the battle of the formats."

The battle was also a cultural one.

William Moon developed his own version of raised text in the1840safter he went blind himself. Unlike Louis Braille, Moon lost his sight in his 20sand supporters of his writing system argued that it was easier for adults to grasp than braille. It more closely resemblesthe letters of the alphabet.

And in 1877, the Halifax School for the Blind started teaching it, Beaumont says.

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There are different theories about why the French code won out. But Beaumont says it's likely because braille spread more quickly.

"It was already in several countries and, if you think about it, it's actually language independent," she says. "Any language that uses the Roman alphabet can adopt braille, whereas Moon was much more localized."

Seeing throughyour fingertips

While braille relies on a person's fingertips to see letters, teachers use the same concept to help their students visualize images. A thermal printer can create the raised lines of a dog's body, filling in the centre with another texture.

That combined with sitting next to the animal to feel its fur, to run one's hand along it to get its shape, help children to identify objects or with mapping geography.

"So they're learning both shapes and words," Beaumont says, outlining first an apple with the pad of her finger before dragging it across the raised dots beneath spelling out the word:a-p-p-l-e.

"It's exactly the same as other children's books."

Software and screenreaders

At seven, ittook RobertGanongless than a year to fluently read braille. He had very limited vision and moved to the Halifax School for the Blind in order to learn a new way to communicate.

And roughly five decades later, he contends the writing systemremains a critical tool for children even as other adaptive technology like screen readers,Siriand othervoice-recognition software emerge.

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"With braille you actually have your fingers on the letters and written words so it really is helpful and practical in terms of spelling and actually recognizing what words look like," he says.

ButGanongsays those technologies are critical to finding work particularly software that will read a computer screen and acceptaudio commands for navigating theinternet,emailand word processors.

"Braille is great and kind of gives a blind person a connection to that literacy benchmark, but it's the modern technologies that I think will carry a person to successful higher levels of education and employment."

TheCNIBexhibit lives online and will remain on display at the Halifax CentralLibrary until Oct. 16.

The exhibit also celebrates a newpartnership between the province's libraries andthe Centre for EquitableLibraryAccess. Theagreement will allow those with vision or print disabilities to accessmore than 400,000 publications in braille, audio or other formats for people with print disabilities.