Taste, smell and feel artwork at Tate Sensorium

A film that you can feel, a video game in which you can touch the characters, or an email that you can sniff.

We have got used to staring at screens, but the next digital frontiers are touch, taste and smell.

A new exhibition at Tate Britain in London opens this week, using some of the latest technology to reawaken our neglected senses.

David Sillito reports.