How can a USB keyboard emulator (TrinketKeyboard) type Unicode characters?
You could hack it.


Make it press CMD+SPACE 
type terminal.app
press ENTER 
type  echo -e
"\xC2\xAF\\_(\xE3\x83\x84)_/\xC2\xAF" | pbcopy
press ENTER
press CMD+Q
press CMD+V


though the user would see a terminal window for a second.