But, leave them a bit, make them feel comfortable, and they'll be in a state of bliss.
Read more here, on a post titled How to interact with the introverted.
Obviously, the need creates a design. What if your clothing could keep your personal space?
"Spike Away vest" keeps people out of your personal space. A designer's spiky vest makes your personal space an unwelcome zone for other people.: http://news.cnet.com/8301-17938_105-57614531-1/spike-away-vest-keeps-people-out-of-your-personal-space/