Ohio State University's surface that allows soap to flow over it freely
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The bottle that empties every drop of soap and other news

BBC Click's Lara Lewington looks at some of the best of the week's technology news, including the news that travellers wanting to use the visa waiver entry system to the US may soon be asked to list their social media profiles. Revealing this information would be "optional".

Plus, the bottle that allows you to empty every last drop of soap or detergent.

More at BBC.com/Click and @BBCClick.

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