Stock Photo - Karol Trnka shows prototype of a tublet, a device for practising the writing and reading of the Braille alphabet, within an exhibition marking 210 years since Louis Braille's birth, on January 7, 2019 in the Brno Technical Museum, Czech Republic. The technology was developed by the Slovak Trnka association and will enable the visually impaired to learn Braille alphabet without an assistant. (CTK Photo/Monika Hlavacova)

Stock Photo: Karol Trnka shows prototype of a tublet, a device for practising the writing and reading of the Braille alphabet, within an exhibition marking 210 years since.

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