As face coverings become the norm amid the coronavirus pandemic, Japanese startup Donut Robotics has developed an internet-connected "smart mask" that can transmit messages and translate from Japanese into eight other languages.

The white plastic c-mask fits over standard face masks and connects via Bluetooth to a smartphone and tablet application that can transcribe speech into text messages, make calls, or amplify the mask wearer's voice.

"We worked hard for years to develop a robot and we have used that technology to create a product that responds to how the coronavirus has reshaped society," said Taisuke Ono, the chief executive of Donut Robotics.