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Films that you can feel. Emails that you can smell. A new frontier in digital technology is emerging that engages the senses of touch, taste and smell.

In an age of screens and text - science is now looking in to how much of our mood and memory is connected to the feel and smell of our environment.

David Sillito reports from the Tate in London, which is opening a new experimental show trying to engage the neglected senses.