In order to stop the spread of COVID-19, many of us are wearing face masks when outside of our homes. While this can be effective, these coverings can be hot, inhibit breathing, and certainly make eating and drinking a bit difficult. What if they could instead be applied only when others are around?

Chen the DesignMaker decided to test this concept out with a servo-actuated mask, which features a hatch that actuates based on input from three PIR sensors and an Arduino Nano. 

When the sensors pick up movement, the mask closes; and when they aren’t activated for a period of time, it opens again. Notably, the device doesn’t have any sort of cloth or other sealing materials inside, making it very much a proof-of-concept, not an effective medical device.