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Sascha Kulas posted an update — Apr 26, 2020 10:26 AM EDT

There are 80.000 deaf people in Germany. Next week people have to wear a mask on the bus, train and supermarket in all German federal states. This is a big problem for deaf people and WATTSN could help.

Sascha Kulas posted an update — Apr 25, 2020 05:12 PM EDT

If an additional ultrasonic receiver will be used, the buzzer (which warns when the battery is nearly empty) could warn the user if he wants to touch his face. Since people touch their face 3.6 times an hour on average, this seems to be a good additional protection.

Sascha Kulas started this project — Apr 24, 2020 06:45 AM EDT

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