Artificial intelligence can pick out the words we're typing from analysis of our brainwaves. Could it give a voice to those who can't speak because of brain injury or illness ? We interview an expert leading the research.

Also on this week's edition of Tech Life, will AI and 3D printing revolutionise the shoe business ? And the hot and cold solution to keep fish fresh in Kenya.

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Presenter: Chris Vallance
Producer: Tom Quinn
Editor: Monica Soriano

(Image: A photo of a female volunteer typing words onto a keyboard while her brain is being scanned. Credit: Meta)