Braille e-book

A braille e-book is a refreshable braille display using electroactive polymers or heated wax rather than mechanical pins to raise braille dots on a display. Though not inherently expensive, due to the small scale of production they have not been shown to be economical. 
Production.
Some e-books are produced simultaneously with the production of a printed format, as described in electronic publishing.
Braille books were initially written in paper, with Perkins Brailler typewriter, a machine invented in 1951, and improved in 2008, another way of produce braille books was with Braille printers or embossers. In 2011 David S. Morgan produced the first SMART Brailler machine, with added text to speech function and allowed digital capture of data entered.
In 1960 Robert Mann, a teacher in MIT, wrote DOTSYS, a software that allowed automatic braille translation, and another group created an embossing device called "M.I.T. Braillemboss.". The Mitre Corporation team of Robert Gildea, Jonathan Millen, Reid Gerhart and Joseph Sullivan (now president of Duxbury Systems) developed DOTSYS III, the first braille translator written in a portable programming language. DOTSYS III was developed for the Atlanta Public Schools as a public domain program. Braille translators allowed the automatic creation of braille text or books from an script into Braille scripture without the need of typing Braille books in Braille typewriters, but still needed embossers to produce books, this last step is not necessary when the e-book is read in a Braille e-book.
Commercial development.
A Korean concept design published in 2009 by Yanko Design attracted attention. A British prototype design called "Anagraphs" was created in 2013, but funding from the European Union ran out before it could be brought to production.
A Braille Ebook/Tablet was slated to be released for purchase in the 4th quarter of 2016 by the Austrian company Blitab. It was expected to be priced under US$3000. As of February 2019 the company was inviting people to sign up as a "Tester", with the explanation, "Become one of the first to touch and feel the future of large scale tactile Braille displays." 