Ion Bar
This novel device is an air curtain designed to be mounted above doorways and flow negative ions downward in a uniform way. The negative ions act as a germicidal barrier and have been lab tested to kill 99.9% of airborne pathogens, including Covid-19. It will also kill bacteria on surfaces.
The intent is to place these above doorways at places such as:
Office conference rooms
Hotel rooms, and reception
Mass transit
And many more