Innovation of the week: An affordable, changeable tablet for the blind

This full-size tablet features refreshable Braille

A refreshable Braille tablet "could make topics like science and math more easily accessible to the blind," said Signe Brewster at Technology Review. Borrowing from microfluids technology, researchers at the University of Michigan have developed a full-size tablet that uses liquid or air to fill tiny bubbles, which pop up on the display to form the blocks of raised dots that make up Braille.

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