Relax: This phone measures your blood pressure

This Swiss electronics company is on a mission: to stop millions of people dying of ignorance each year.

Worldwide, high blood pressure leads to around 9.4 million deaths annually, according to figures from the World Health Organization. And yet, the condition is easily diagnosed and treated. In the Americas, the prevalence of high blood pressure fell from 31 percent in 1980 to 18 percent in 2014, but remains high in developing countries.

Before high blood pressure can be controlled, though, it needs to be detected, and that's the part that Leman Micro Devices (LMD) wants to make simpler. It is showing off its solution at Mobile World Congress in Barcelona this week.

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