Covid 19 - Social Distancing Wristbands - Is there a need?

The pandemic that the world has faced in the last year and a half has had an enormous effect on everybody's lives.

More and more people are experiencing anxiety and fear when encountering other people.  

Silicone wristbands are made to last a long time.  They are removable, comfortable and waterproof.

These rubber bracelets can be used to let others know your comfort level when it comes to social distancing.  Use for back to school, work or just around friends and family.  

Much like a traffic light - each colour has a message.

Red: Please stay back as far as possible. (social distance)

Yellow: Maintain a respectful distance. (caution)

Green: Come as close as you are comfortable with. (handshakes and hugs)

Is there a need for these?  I don't think that this item is mandatory, but I feel that it might give some people a sense of security when out in public.