A student at the Copenhagen Institute of Interaction Design named
Laura Boffi invented that view for a vest to be worn by messenger
dogs. The dog would be trained to find public (during a catastrophe, in
the mountains, whatever) and sit in front of them so they can type
their name and record a voice letter (“Send brandy next instance!”). A
GPS device records the location. The dogs thereupon return to where they
started so rescuers get the note.