Hart Mind Soul (HMS) is a screen print t-shirt company based in Portland, Oregon. All of the designers are local graffiti artists and HMS even uses illicit graffiti as part of it's marketing campaign. HMS may even be best known for the thousands of ambiguous stickers they post throughout cities across the country. These stickers read "Protected by: HMS Security Systems" and can often be seen on doors and windows of local businesses, homes, and even light-rail trains.