Ever wanted to make a private call in a public space?

A Ukranian start-up thinks it has the solution: a hi-tech face mask that muffles the user’s voice while blasting out electronic sounds.

The device is one of the more curious items on show at the CES tech trade fair in Las Vegas, where the BBC’s Chris Foxx put to the test.

Read and watch all our coverage from CES

Originally Published By BBc.

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