NASA is working to help stop the spread of coronavirus.
The space agency created a wearable item called "PULSE." It vibrates when a person's hands come close to their face. That way, they can remember to avoid contact.
NASA isn't selling the devices, but you can make one at home. You will need a 3D printer, wire and other materials.
The instructions on how to make one are here. You can find more information about the device here.