Google's soft drinks bar. Business Insider/James Cook BARCELONA, Spain — Mobile World Congress is the giant technology event that takes place in Barcelona every year. It used to be a relatively small event for telecoms companies, but it's grown to become a massive showcase for the entire tech industry.

This year was no different. Google has a large outdoor area with a soft drinks bar where you paid with a high five. And tech companies showed off some truly strange products.

Take a look inside Mobile World Congress 2017: