To be honest with you, I don't see the reason we should be picking our nose while in public. I understand that we are trying to live that life which is going to benefit us at the end of the day and that involves trying to do things that makes us comfortable. However, I don't see the reason we should be trying to dominate something that may not benefit everyone as well. The act of trying to use our bare fingers to pick our nose shows the sign to others that we are not mature and civilized. There are alternatives such as making use of the handkerchief to clean off any moss that we have in our nose instead of using the hands. Also, there are times that we can use water to wash it off if we are working in an office where such is allowed. It is all about doing what is safe for the rest of us.