The Lane-Keeping Bed was created as part of an exploratory project of the company's technology aimed at tackling everyday problems and remains a prototype, meaning there are not any current plans to put it to market.
'When sleeping together, many couples each have less space than a small child has in a single bed,' said Dr Neil Stanley, a sleep expert and author.
'Humans are most vulnerable when sleeping, so we're programmed to wake when something or someone touches us unexpectedly.
'If someone moves onto your side of the bed this defence mechanism will kick in and you'll have a broken night, often while they continue to sleep soundly. I've seen it ruin relationships.'